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HTTP Status 500 javax.servlet.ServletException: Servlet.init() for servlet [Jersey RESTful App] threw exception java.lang.IllegalArgumentException

I am writing my first Java REST application.
I was following this tutorial:
https://www.tutorialspoint.com/restful/restful_first_application.htm
but I am getting this error:
HTTP Status 500 – Internal Server Error
Type Exception Report
Message Servlet.init() for servlet [Jersey RESTful Application] threw exception
Description The server encountered an unexpected condition that prevented it from fulfilling the request.
Exception
javax.servlet.ServletException: Servlet.init() for servlet [Jersey RESTful Application] threw exception
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:690)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:373)
org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1590)
org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
java.base/java.lang.Thread.run(Thread.java:830)
Root Cause
java.lang.IllegalArgumentException
jersey.repackaged.org.objectweb.asm.ClassReader.<init>(ClassReader.java:171)
jersey.repackaged.org.objectweb.asm.ClassReader.<init>(ClassReader.java:153)
jersey.repackaged.org.objectweb.asm.ClassReader.<init>(ClassReader.java:425)
org.glassfish.jersey.server.internal.scanning.AnnotationAcceptingListener.process(AnnotationAcceptingListener.java:170)
org.glassfish.jersey.server.ResourceConfig.scanClasses(ResourceConfig.java:915)
org.glassfish.jersey.server.ResourceConfig._getClasses(ResourceConfig.java:869)
org.glassfish.jersey.server.ResourceConfig.getClasses(ResourceConfig.java:775)
org.glassfish.jersey.server.ResourceConfig$RuntimeConfig.<init>(ResourceConfig.java:1206)
org.glassfish.jersey.server.ResourceConfig$RuntimeConfig.<init>(ResourceConfig.java:1178)
org.glassfish.jersey.server.ResourceConfig.createRuntimeConfig(ResourceConfig.java:1174)
org.glassfish.jersey.server.ApplicationHandler.<init>(ApplicationHandler.java:345)
org.glassfish.jersey.servlet.WebComponent.<init>(WebComponent.java:392)
org.glassfish.jersey.servlet.ServletContainer.init(ServletContainer.java:177)
org.glassfish.jersey.servlet.ServletContainer.init(ServletContainer.java:369)
javax.servlet.GenericServlet.init(GenericServlet.java:158)
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:690)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:373)
org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1590)
org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
java.base/java.lang.Thread.run(Thread.java:830)
Could you help me?
I checked with many similiar topics and articles also here on Stack Overflow but nothing helped me.
My specification:
OS: Windows 10
IDE: Eclipse Version: 2020-06 (4.16.0)
Application server: apache-tomcat-9.0.38
jaxrs-ri-2.25.1
I copied code from tutorial website to my project to make sure I made no mistake.
Java files:
UserService.java
package com.tutorialspoint;
import java.util.List;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
#Path("/UserService")
public class UserService {
UserDao userDao = new UserDao();
#GET
#Path("/users")
#Produces(MediaType.APPLICATION_XML)
public List<User> getUsers(){
return userDao.getAllUsers();
}
}
User.java
package com.tutorialspoint;
import java.io.Serializable;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;
#XmlRootElement(name = "user")
public class User implements Serializable {
private static final long serialVersionUID = 1L;
private int id;
private String name;
private String profession;
public User(){}
public User(int id, String name, String profession){
this.id = id;
this.name = name;
this.profession = profession;
}
public int getId() {
return id;
}
#XmlElement
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
#XmlElement
public void setName(String name) {
this.name = name;
}
public String getProfession() {
return profession;
}
#XmlElement
public void setProfession(String profession) {
this.profession = profession;
}
}
UserDao.java
package com.tutorialspoint;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.ArrayList;
import java.util.List;
public class UserDao {
public List<User> getAllUsers(){
List<User> userList = null;
try {
File file = new File("Users.dat");
if (!file.exists()) {
User user = new User(1, "Mahesh", "Teacher");
userList = new ArrayList<User>();
userList.add(user);
saveUserList(userList);
}
else{
FileInputStream fis = new FileInputStream(file);
ObjectInputStream ois = new ObjectInputStream(fis);
userList = (List<User>) ois.readObject();
ois.close();
}
} catch (IOException e) {
e.printStackTrace();
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
return userList;
}
private void saveUserList(List<User> userList){
try {
File file = new File("Users.dat");
FileOutputStream fos;
fos = new FileOutputStream(file);
ObjectOutputStream oos = new ObjectOutputStream(fos);
oos.writeObject(userList);
oos.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}
web.xml
<?xml version = "1.0" encoding = "UTF-8"?>
<web-app xmlns:xsi = "http://www.w3.org/2001/XMLSchema-instance"
xmlns = "http://java.sun.com/xml/ns/javaee"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
id = "WebApp_ID" version = "3.0">
<display-name>User Management</display-name>
<servlet>
<servlet-name>Jersey RESTful Application</servlet-name>
<servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
<init-param>
<param-name>jersey.config.server.provider.packages</param-name>
<param-value>com.tutorialspoint</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>Jersey RESTful Application</servlet-name>
<url-pattern>/rest/*</url-pattern>
</servlet-mapping>
</web-app>

I got it working by using apache-tomcat-9.0.38 and Jersey 2.16

Getting 404 error while accessing a restful web service

I have created a simple UserManagement restful web service. in which I have created 3 classes. The source codes are as following.
User class
package com.tutorialspoint;
import java.io.Serializable;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;
#XmlRootElement(name = "user")
public class User implements Serializable{
private static final long serialVersionUID = 1L;
private int id;
private String name;
private String profession;
public User(){}
public User(int id, String name, String profession){
this.id = id;
this.name = name;
this.profession = profession;
}
public int getId() {
return id;
}
#XmlElement
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
#XmlElement
public void setName(String name) {
this.name = name;
}
public String getProfession() {
return profession;
}
#XmlElement
public void setProfession(String profession) {
this.profession = profession;
}
}
UserDao class
package com.tutorialspoint;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.ArrayList;
import java.util.List;
public class UserDao {
public List<User> getAllUsers(){
List<User> userList = null;
try {
File file = new File("Users.dat");
if (!file.exists()) {
User user = new User(1, "Mahesh", "Teacher");
userList = new ArrayList<User>();
userList.add(user);
saveUserList(userList);
}
else{
FileInputStream fis = new FileInputStream(file);
ObjectInputStream ois = new ObjectInputStream(fis);
userList = (List<User>) ois.readObject();
ois.close();
}
} catch (IOException e) {
e.printStackTrace();
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
return userList;
}
private void saveUserList(List<User> userList){
try {
File file = new File("Users.dat");
FileOutputStream fos;
fos = new FileOutputStream(file);
ObjectOutputStream oos = new ObjectOutputStream(fos);
oos.writeObject(userList);
oos.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}
UserService class
package com.tutorialspoint;
import java.util.List;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
#Path("/UserService")
public class UserService {
UserDao userDao = new UserDao();
#GET
#Path("/users")
#Produces(MediaType.APPLICATION_XML)
public List<User> getUsers(){
return userDao.getAllUsers();
}
}
web.xml
<?xml version = "1.0" encoding = "UTF-8"?>
<web-app xmlns:xsi = "http://www.w3.org/2001/XMLSchema-instance"
xmlns = "http://java.sun.com/xml/ns/javaee"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
id = "WebApp_ID" version = "3.0">
<display-name>User Management</display-name>
<servlet>
<servlet-name>Jersey RESTful Application</servlet-name>
<servlet-class>org.glassfish.jersey.servlet.ServletContainer </servlet-class>
<init-param>
<param-name>jersey.config.server.provider.packages</param-name>
<param-value>com.tutorialspoint</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>Jersey RESTful Application</servlet-name>
<url-pattern>/rest/*</url-pattern>
</servlet-mapping>
</web-app>
Then I have created its war and deployed in Tomcat and start the Tomcat
But when I am accessing this restfull web service by hitting the url http://localhost:8080/UserManagement/rest/UserService/users
using Postman it gives 404 error.
Please some one help me out on this.

Try change servlet class with com.sun.jersey.spi.container.servlet.ServletContainer .

Rest Webservice returning http status 404

I am using Apache Tomcat 6 and the Jersey 2.0 libraries. I am running this service on 8088 port. While trying to access it, getting 404 not found error. This is my service:
User Class
package com.tutorialspoint;
import java.io.Serializable;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;
#XmlRootElement(name = "user")
public class User implements Serializable {
private static final long serialVersionUID = 1L;
private int id;
private String name;
private String profession;
public User(){}
public User(int id, String name, String profession){
this.id = id;
this.name = name;
this.profession = profession;
}
public int getId() {
return id;
}
#XmlElement
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
#XmlElement
public void setName(String name) {
this.name = name;
}
public String getProfession() {
return profession;
}
#XmlElement
public void setProfession(String profession) {
this.profession = profession;
}
}
UserDao Class
package com.tutorialspoint;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.ArrayList;
import java.util.List;
public class UserDao {
public List<User> getAllUsers(int id){
List<User> userList = null;
try {
User user = null;
if(id == 1){
user = new User(1, "Mahesh", "Teacher");
}
if(id == 2){
user = new User(2, "Manish", "Doctor");
}
userList = new ArrayList<User>();
userList.add(user);
} catch (Exception e) {
e.printStackTrace();
}
return userList;
}
}
UserService class
package com.tutorialspoint;
import java.util.List;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
#Path("/UserService")
public class UserService {
UserDao userDao = new UserDao();
#GET
#Path("{id}")
#Produces(MediaType.APPLICATION_XML)
public List<User> getUsers(#PathParam("id") int id){
return userDao.getAllUsers(id);
}
}
web.xml
<?xml version = "1.0" encoding = "UTF-8"?>
<web-app xmlns:xsi = "http://www.w3.org/2001/XMLSchema-instance"
xmlns = "http://java.sun.com/xml/ns/javaee"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
id = "WebApp_ID" version = "3.0">
<display-name>UserManagement</display-name>
<servlet>
<servlet-name>Jersey RESTful Application</servlet-name>
<servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>Jersey RESTful Application</servlet-name>
<url-pattern>/rest/*</url-pattern>
</servlet-mapping>
</web-app>
My project Stucture is like this
Getting this error

How to delete record using primarykey in dynamodb

I get the record using primarykey id in amazon dynamodb using java.
AccountController.java
package com.dynamodb.controller;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
import com.account.json.AccountJson;
import com.account.service.AccountService;
#Controller
public class AccountController extends AbstractServiceController {
#Autowired
private AccountService accountService;
#RequestMapping(value = "/deleteAccountByAccountId", method = RequestMethod.POST)
public #ResponseBody String deleteAccountByAccountId(#RequestBody AccountJson accountJson) {
try {
Boolean bool = accountService.deleteAccountByAccountId(accountJson.getAccountId());
if (bool) {
return "Record deleted Successfully";
} else {
return "Record not deleted";
}
} catch (Exception e) {
e.printStackTrace();
return e.getMessage();
}
}
}
AccountService.java
package com.account.service;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.account.dao.AccountRepository;
#Service
public class AccountService {
#Autowired
private AccountRepository accountRepository;
public Boolean deleteAccountByAccountId(String accountId) {
return accountRepository.deleteAccountByAccountId(accountId);
}
}
AccountRepository.java
package com.account.dao;
import java.util.List;
import org.springframework.stereotype.Repository;
import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBMapper;
import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBScanExpression;
import com.amazonaws.services.dynamodbv2.model.AttributeValue;
import com.amazonaws.services.dynamodbv2.model.ComparisonOperator;
import com.amazonaws.services.dynamodbv2.model.Condition;
import com.account.datastore.Account;
#Repository
public class AccountRepository extends BaseRepository {
public Account getAccountByAccountId(String accountId) {
Account account = null;
try {
DynamoDBMapper mapper = getDynameDbMapper();
DynamoDBScanExpression scanExpression = new DynamoDBScanExpression();
scanExpression.addFilterCondition("accountId", new Condition().withComparisonOperator(ComparisonOperator.EQ).withAttributeValueList(new AttributeValue().withS(accountId)));
List<Account> accounts = mapper.scan(Account.class, scanExpression);
if (accounts != null && accounts.size() > 0) {
account = accounts.get(0);
}
} catch (Exception e) {
e.printStackTrace();
}
return account;
}
public Boolean deleteAccountByAccountId(String accountId) {
try {
Account account = getAccountByAccountId(accountId);
if (account != null) {
DynamoDBMapper mapper = getDynameDbMapper();
mapper.delete(account);
} else {
return false;
}
} catch (Exception e) {
e.printStackTrace();
return false;
}
return true;
}
}
Account.java
package com.account.datastore;
import java.io.Serializable;
import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBAutoGeneratedKey;
import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBHashKey;
import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBTable;
#DynamoDBTable(tableName = "cd_accounts")
public class Account implements Serializable {
private static final long serialVersionUID = 244669855912873613L;
#DynamoDBAutoGeneratedKey
#DynamoDBHashKey
private String accountId;
private String documentTypeId;
private String accountName;
private Long isActive;
private Long isBill;
public String getAccountId() {
return accountId;
}
public void setAccountId(String accountId) {
this.accountId = accountId;
}
public String getDocumentTypeId() {
return documentTypeId;
}
public void setDocumentTypeId(String documentTypeId) {
this.documentTypeId = documentTypeId;
}
public String getAccountName() {
return accountName;
}
public void setAccountName(String accountName) {
this.accountName = accountName;
}
public Long getIsActive() {
return isActive;
}
public void setIsActive(Long isActive) {
this.isActive = isActive;
}
public Long getIsBill() {
return isBill;
}
public void setIsBill(Long isBill) {
this.isBill = isBill;
}
}
Error is occurred while deleting the record. How to delete the record in amazon dynamodb using java.
com.amazonaws.AmazonServiceException: The provided key element does not match the schema (Service: AmazonDynamoDBv2; Status Code: 400; Error Code: ValidationException; Request ID: NR1SVIM98PVPFNHUOL49EI4JPFVV4KQNSO5AEMVJF66Q9ASUAAJG)
10:02:18,739 ERROR [AccountRepository] deleteAccountByAccountId Error:The provided key element does not match the schema (Service: AmazonDynamoDBv2; Status Code: 400; Error Code: ValidationException; Request ID: NR1SVIM98PVPFNHUOL49EI4JPFVV4KQNSO5AEMVJF66Q9ASUAAJG)
10:02:18,739 DEBUG [AccountController] --------------deleteAccountByAccountId----------------END------------------
at com.amazonaws.http.AmazonHttpClient.handleErrorResponse(AmazonHttpClient.java:1077)
at com.amazonaws.http.AmazonHttpClient.executeOneRequest(AmazonHttpClient.java:725)
at com.amazonaws.http.AmazonHttpClient.executeHelper(AmazonHttpClient.java:460)
at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:295)
at com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient.invoke(AmazonDynamoDBClient.java:3106)
at com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient.deleteItem(AmazonDynamoDBClient.java:967)
at com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBMapper.delete(DynamoDBMapper.java:1364)
at com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBMapper.delete(DynamoDBMapper.java:1272)
at com.account.dao.AccountRepository.deleteAccountByAccountId(AccountRepository.java:110)
at com.account.service.AccountService.deleteAccountByAccountId(AccountService.java:40)
at com.account.controller.AccountController.deleteAccountByAccountId(AccountController.java:62)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:215)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:781)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:721)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:83)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:943)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:877)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:868)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:744)

documentTypeId is primarykey for cd_documentTypes table, this primarykey is used in cd_accounts table as a foreignkey.
If the table having foreignkey relation we must mention the #DynamoDBRangeKey annotation above documentTypeId attribute in Account class. Problem is solved after declared the #DynamoDBRangeKey on top of the attribute documentTypeId.
#DynamoDBRangeKey
private String documentTypeId;
If we want to save or update or delete records in amazon dynamodb using java we must mention the
annotation #DynamoDBHashKey on top of the primarykey column.
#DynamoDBAutoGeneratedKey
#DynamoDBHashKey
private String accountId;
Below is the image shown for foreignkey relation exists in cd_accounts table.
Note:Range key attribute field is displayed if the table is mapping to another table primarykey in amaozong dynamodb.

java.lang.NoSuchMethodException: [Lcom.dn.vo.User;.<init>()

I am using Spring MVC to build a web application. I created a new VO named User and created a POST method to process the VO. The VO is having default constructor, yet I am getting
java.lang.NoSuchMethodException: [Lcom.dn.vo.User;.<init>().
The code involved is as follows:
User VO
package com.dn.vo;
import java.io.Serializable;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.Table;
import org.springframework.beans.factory.annotation.Autowired;
import com.dn.enums.Salutation;
#Entity
#Table(name = "PHONE_USER")
public class User implements Serializable {
long userId;
String firstName;
String surName;
Salutation salutation;
public User() {
super();
}
public User(long userId, String firstName, String surName, Salutation salutation) {
super();
this.userId = userId;
this.firstName = firstName;
this.surName = surName;
this.salutation = salutation;
}
#Id
#GeneratedValue
#Column(name = "USER_ID", unique = true, nullable = false, precision = 5, scale = 0)
public long getUserId() {
return userId;
}
public void setUserId(long userId) {
this.userId = userId;
}
#Column(name = "FIRST_NAME", nullable = false, length = 20)
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
#Column(name = "SURNAME", nullable = false, length = 20)
public String getSurName() {
return surName;
}
public void setSurName(String surName) {
this.surName = surName;
}
#Column(name = "SALUTATION", nullable = false, length = 20)
public Salutation getSalutation() {
return salutation;
}
public void setSalutation(Salutation salutation) {
this.salutation = salutation;
}
#Override
public String toString() {
return firstName+" "+surName;
}
}
MVC Controller
package com.dn.controller;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
import com.dn.db.DBConnectionProvider;
import com.dn.vo.User;
#Controller
public class UserRegistrationController {
#Autowired
private DBConnectionProvider dbConnectionProvider;
#ResponseBody #RequestMapping(value= "/createUser", method = RequestMethod.POST, headers="Accept=application/json")
public void createUser( User user) {
System.out.println(user.toString());
}
#ResponseBody #RequestMapping(value= "/createUsers", method = RequestMethod.POST, headers="Accept=application/json")
public void createUser( User[] user) {
System.out.println(user.toString());
}
}
HTTP Client Test
package com.dn.controller;
import java.util.ArrayList;
import java.util.List;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicHeader;
import org.apache.http.message.BasicNameValuePair;
import org.codehaus.jackson.map.ObjectMapper;
import com.dn.enums.Salutation;
import com.dn.vo.User;
public class UserRegistrationControllerTest {
public static void main(String[] args) {
UserRegistrationControllerTest test = new UserRegistrationControllerTest();
test.testUserArrayInput();
}
private void testSingleUserInput(){
HttpClient httpClient = null;
try {
httpClient = new DefaultHttpClient();
String url = "http://localhost:8080/DNServer/createUser";
HttpPost httpPost = new HttpPost(url);
httpPost.setHeader(new BasicHeader("Accept", "application/json"));
User region = new User();
region.setFirstName("ABC");
region.setSurName("XYZ");
region.setSalutation(Salutation.Mr);
ObjectMapper mapper = new ObjectMapper();
System.out.println( mapper.writeValueAsString(region));
List nameValuePairs = new ArrayList();
nameValuePairs.add(new BasicNameValuePair("user", mapper.writeValueAsString(region)));
httpPost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpClient.execute(httpPost);
System.out.println("test Single User Input done"+response);
} catch (Exception e) {
e.printStackTrace();
}
}
private void testUserArrayInput(){
HttpClient httpClient = null;
try {
httpClient = new DefaultHttpClient();
String url = "http://localhost:8080/DNServer/createUsers";
HttpPost httpPost = new HttpPost(url);
httpPost.setHeader(new BasicHeader("Accept", "application/json"));
User[] regions = new User[1];
User region = new User();
region.setFirstName("XYZ");
region.setSurName("ABC");
region.setSalutation(Salutation.Mr);
regions[0] = region;
ObjectMapper mapper = new ObjectMapper();
System.out.println( mapper.writeValueAsString(regions));
List nameValuePairs = new ArrayList();
nameValuePairs.add(new BasicNameValuePair("users", mapper.writeValueAsString(regions)));
httpPost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpClient.execute(httpPost);
System.out.println("done");
} catch (Exception e) {
e.printStackTrace();
}
}
}
Full Stack Trace
SEVERE: Servlet.service() for servlet [DNServlet] in context with path [/DNServer] threw exception [Request processing failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [[Lcom.dn.vo.User;]: No default constructor found; nested exception is java.lang.NoSuchMethodException: [Lcom.dn.vo.User;.<init>()] with root cause
java.lang.NoSuchMethodException: [Lcom.dn.vo.User;.<init>()
at java.lang.Class.getConstructor0(Class.java:2721)
at java.lang.Class.getDeclaredConstructor(Class.java:2002)
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:105)
at org.springframework.web.method.annotation.ModelAttributeMethodProcessor.createAttribute(ModelAttributeMethodProcessor.java:138)
at org.springframework.web.servlet.mvc.method.annotation.ServletModelAttributeMethodProcessor.createAttribute(ServletModelAttributeMethodProcessor.java:81)
at org.springframework.web.method.annotation.ModelAttributeMethodProcessor.resolveArgument(ModelAttributeMethodProcessor.java:104)
at org.springframework.web.method.support.HandlerMethodArgumentResolverComposite.resolveArgument(HandlerMethodArgumentResolverComposite.java:79)
at org.springframework.web.method.support.InvocableHandlerMethod.getMethodArgumentValues(InvocableHandlerMethod.java:157)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:124)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:749)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:689)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:83)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:938)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:870)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:961)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:863)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:644)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:837)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:725)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:301)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:503)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:136)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:74)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:526)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1017)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:652)
at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:222)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1575)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1533)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:722)`enter code here`

I think that the clue is in the method name:
[Lcom.dn.vo.User;.<init>()
When we deconstruct that, Spring appears to be trying to invoke a no-args constructor (the <init>() "method") on the type [Lcom.dn.vo.User;. But that type means "array of com.dn.vo.User". And array classes don't have constructors.
I can see some code in your unit test that creates a User[] and appears to pass it as an argment in a POST request to "/createUsers". But the MVC class doesn't have a method that binds to "/createUsers".
Is that right???