I am going through the Play Framework tutorial. I am getting this error:
error: cannot find symbol
In /Users/hseritt/devel/todolist/app/controllers/Application.java at line 12.
import views.html.*;
public class Application extends Controller {
static Form<Task> taskForm = Form.form(Task.class); // ERROR IS HIGHLIGHTED AS Form.form
public static Result index() {
return redirect(routes.Application.tasks());
}
My full code for Application.java:
package controllers;
import play.*;
import play.data.*;
import play.mvc.*;
import models.*;
import views.html.*;
public class Application extends Controller {
static Form<Task> taskForm = Form.form(Task.class);
public static Result index() {
return redirect(routes.Application.tasks());
}
public static Result tasks() {
return ok(
views.html.index.render(Task.all(), taskForm)
);
}
public static Result newTask() {
return TODO;
}
public static Result deleteTask(Long id) {
return TODO;
}
}
I am wondering if I missed something in the tutorial or put something in the wrong place.
Thanks!
I think you should import the following:
import static play.data.Form.*;
As per jnoob, just change import to import play.data.Form, then do static Form<Task> taskForm = form(Task.class);, worked for me.
Related
I have following template extension:
package com.company;
import io.quarkus.qute.RawString;
import io.quarkus.qute.TemplateExtension;
#TemplateExtension
public class TemplateExtensions {
static RawString myMethod(Input input, String someEnumName) {
SomeEnum value = SomeEnum.valueOf(someEnumName);
//...
return new RawString("...");
}
}
With this enum:
package com.company;
public enum SomeEnum {
LOREM,
IPSUM;
}
In my template I do following:
{input.myMethod('LOREM')}
This works great, but I am wondering how and if I can use the enum value directly:
package com.company;
import io.quarkus.qute.RawString;
import io.quarkus.qute.TemplateExtension;
#TemplateExtension
public class TemplateExtensions {
static RawString myMethod(Input input, SomeEnum value) {
//...
return new RawString("...");
}
}
I have tried:
{input.myMethod(com.company.SomeEnum.LOREM)}
But this creates:
NOT_FOUND
Hello resource:
package com.company;
import javax.inject.Inject;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import io.quarkus.qute.Template;
import io.quarkus.qute.TemplateInstance;
#Path("/hello")
public class ExampleResource {
#Inject
Template helloTemplate;
#GET
#Path("/index.html")
public TemplateInstance index() {
return helloTemplate.data("input", new Input());
}
}
And Input Class:
package com.company;
public class Input {
String foo = "bar";
public String getFoo() {
return foo;
}
public void setFoo(String foo) {
this.foo = foo;
}
}
I needed to do this too, and I found an answer by searching through the Github issues for Quarkus. You can do it with Template Extensions
Add a method like this to your Enum:
#TemplateExtension(namespace = "SomeEnum", matchName = ANY)
static SomeEnum getVal(String val) {
return SomeEnum .valueOf(val.toUpperCase());
}
and then in your template, you can access it using {SomeEnum:LOREM}
I am trying to make a basic mod for minecraft and am following a tutorial for the same. When I run runClient, it gives me the following error
Reference to undefined variable MC_VERSION
Here is my main.java for reference:
package rattandeep.basicmod;
import net.minecraftforge.fml.common.Mod;
import net.minecraftforge.fml.common.Mod.EventHandler;
import net.minecraftforge.fml.common.Mod.Instance;
import net.minecraftforge.fml.common.SidedProxy;
import net.minecraftforge.fml.common.event.FMLInitializationEvent;
import net.minecraftforge.fml.common.event.FMLPostInitializationEvent;
import net.minecraftforge.fml.common.event.FMLPreInitializationEvent;
import rattandeep.basicmod.proxy.CommonProxy;
import rattandeep.basicmod.util.Reference;
#Mod(modid = Reference.MOD_ID, name = Reference.NAME, version = Reference.VERSION)
public class Main {
#Instance
public static Main instance;
#SidedProxy(clientSide = Reference.CLIENT_PROXY_CLASS, serverSide = Reference.COMMON_PROXY_CLASS)
public static CommonProxy proxy;
#EventHandler
public static void PreInit(FMLPreInitializationEvent event) {
}
#EventHandler
public static void init(FMLInitializationEvent event) {
}
#EventHandler
public static void Postinit(FMLPostInitializationEvent event) {
}
}
I have searched for a solution but found none. How do I solve this?
I found out how to solve it. I just needed to change the variable value of MC_VERSION in my runClient launch file to my minecraft version.
I am building a REST API to access a database and having trouble / consistently getting a whitepage error. Running in circles trying to find my error and/or my error in the flow or logic of the program.
Here is my application:
package com.skilldistillery.myRest;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.domain.EntityScan;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
#SpringBootApplication
#ComponentScan(basePackages= {"com.skilldistillery.edgemarketing"})
#EntityScan("com.skilldistillery.edgemarketing")
#EnableJpaRepositories("com.skilldistillery.myRest.repositories")
public class MyRestApplication extends SpringBootServletInitializer {
#Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
return application.sources(MyRestApplication.class);
}
public static void main(String[] args) {
SpringApplication.run(MyRestApplication.class, args);
}
}
My controller:
package com.skilldistillery.myRest.controllers;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import com.skilldistillery.edgemarketing.entities.House;
import com.skilldistillery.myRest.services.HouseService;
#RestController
#RequestMapping("api")
#CrossOrigin({ "*", "http://localhost:4200" })
public class HouseController {
#Autowired
HouseService houseServ;
#GetMapping("index/{id}")
public House show(#PathVariable("id") Integer id) {
return houseServ.show(id);
}
}
My repo:
package com.skilldistillery.myRest.repositories;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;
import com.skilldistillery.edgemarketing.entities.House;
#Repository
public interface HouseRepo extends JpaRepository<House, Integer> {
}
My service:
package com.skilldistillery.myRest.services;
import java.util.List;
import org.springframework.stereotype.Service;
import com.skilldistillery.edgemarketing.entities.House;
#Service
public interface HouseService {
List<House> index();
House show(Integer id);
}
And my ServiceImpl:
package com.skilldistillery.myRest.services;
import java.util.Optional;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.skilldistillery.edgemarketing.entities.House;
import com.skilldistillery.myRest.repositories.HouseRepo;
#Service
public class HouseServiceImpl {
#Autowired
HouseRepo hRepo;
public House show(Integer id) {
Optional<House> opt = hRepo.findById(id);
House house = null;
if (opt.isPresent()) {
house = opt.get();
}
return house;
}
}
It compiles and launches but via postman and browser, I am getting whitepage errors. I've scoured the internets trying to understand where I'm going wrong but not finding it. Please advise.
You can use the following solution.
Change your main class to the following code
#SpringBootApplication
public class MyrestapplicationApplication {
public static void main(String[] args) {
SpringApplication.run(MyrestapplicationApplication.class, args);
}
}
Then create a separate class for your configurations.As well as running away from tight coupled architecture.
#Configuration
#EntityScan("com.skilldistillery.edgemarketing.entities")
#EnableJpaRepositories("com.skilldistillery.myRest.repositories")
public class BusinessConfig {
#Bean
public HouseService houseService(final HouseRepo houseRepo){
return new HouseServiceImpl(houseRepo);
}
}
Your controller will then change to the following.Utilising Dependency Injection
#RestController
#RequestMapping("api")
#CrossOrigin({ "*", "http://localhost:4200" })
public class HouseController {
private HouseService houseServ;
public HouseController(HouseService houseServ) {
this.houseServ = houseServ;
}
#GetMapping(value = "index/{id}",produces = MediaType.APPLICATION_JSON_VALUE,consumes = MediaType.APPLICATION_JSON_VALUE)
public House show(#PathVariable("id") Integer id) {
return houseServ.show(id);
}
}
HouseServiceImpl should also implement HouseService
public class HouseServiceImpl implements HouseService{
private HouseRepo hRepo;
public HouseServiceImpl(HouseRepo hRepo) {
this.hRepo = hRepo;
}
#Override
public List<House> index() {
return null;
}
public House show(Integer id) {
Optional<House> opt = hRepo.findById(id);
House house = new House();
if (opt.isPresent()) {
house = opt.get();
}
return house;
}
}
*NB - don't forget to remove the following configs #Autowired,#Repository as they are now handled within the BusinessConfig class.More Beans can be defined in the BusinessConfig Class
I am coding in spring-boot. I tried to get the value of properties.properties in other packages without success. For example in the classe ClassUtils.java, the value of testValue is always null
This is my project
This is my code:
package com.plugins.controller;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;
import com.plugins.domain.ClassUtils;
#RestController
public class SearchContactController {
#Value("${environnement.test}")
String testValue;
#Value("${environnement.url}")
String urlValue;
#RequestMapping(value = "/test")
public String pingRequest() {
System.out.println("value ===> " + testValue + " /// " + urlValue);
return "test !" + ClassUtils.getTestValue();
}
}
This is my second class, where I can't get the value of testValue variable:
package com.plugins.domain;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;
#Component
public class ClassUtils {
#Value("${environnement.test}")
static String testValue;
public static String getTestValue(){
return "The return "+testValue;
}
}
This is my springApp.java
package com.plugins;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
#SpringBootApplication
public class SpringBootVideApplication {
public static void main(String[] args) {
SpringApplication.run(SpringBootVideApplication.class, args);
}
}
Enable #ComponentScan({"com.plugins"}) , in Application
To access the properties defined in application.properties
myapp.url="xxxxxx"
in your class
#Value("${myapp.url}")
private String testValue;
but this cannot be a static variable, if it is a static variable you do some hack like this, by defining setter method
private static String testValue;
#Value("${myapp.url}")
public void testValue(String value) {
testValue = value;
}
I resolve this issue by addin #Autowired in the class which use the method of the other class this is a snippet
// Class: SearchContactController.java
#Autowired
ClassUtils cd;
#RequestMapping(value = "/ping")
public String pingRequest() {
return "Ping OK !" + cd.getTestValue();
}
I have started making a mod, it's not registering as an item. When i type /give Fidojj222 fcm:fuel_canister it should give me the item except it says it doesn't exist! I am using eclipse as my IDE I am suspecting it might be this warning when I compile it into a jar:
JAR export finished with warnings. See details for additional information.
Can not export external class folder at 'C:\Users\J.J\.gradle\caches\minecraft\net\minecraftforge\forge\1.8-11.14.3.1450\start'.
If that is the problem, then how can I fix it? If not here's my code:
CarsMod.java:
package com.fidojj222.carsmod;
import com.fidojj222.carsmod.init.CarsItems;
import com.fidojj222.carsmod.proxy.CommonProxy;
import net.minecraftforge.fml.common.Mod;
import net.minecraftforge.fml.common.SidedProxy;
import net.minecraftforge.fml.common.event.FMLInitializationEvent;
import net.minecraftforge.fml.common.event.FMLPostInitializationEvent;
import net.minecraftforge.fml.common.event.FMLPreInitializationEvent;
#Mod(modid = Reference.MOD_ID, name = Reference.MOD_NAME, version = Reference.VERSION)
public class CarsMod {
#SidedProxy(clientSide = Reference.CLIENT_PROXY_CLASS, serverSide = Reference.SERVER_PROXY_CLASS)
public static CommonProxy proxy;
public void PreInit(FMLPreInitializationEvent event){
CarsItems.init();
CarsItems.register();
}
public void Init(FMLInitializationEvent event){
proxy.registerRenders();
}
public void PostInit(FMLPostInitializationEvent event){
}
}
Reference.java:
package com.fidojj222.carsmod;
public class Reference {
public static final String MOD_ID = "fcm";
public static final String MOD_NAME = "Fidojj222\'s Cars Mod";
public static final String VERSION = "1.0";
public static final String CLIENT_PROXY_CLASS = "com.fidojj222.carsmod.proxy.ClientProxy";
public static final String SERVER_PROXY_CLASS = "com.fidojj222.carsmod.proxy.CommonProxy";
}
CarsItems.java:
package com.fidojj222.carsmod.init;
import com.fidojj222.carsmod.Reference;
import net.minecraft.client.Minecraft;
import net.minecraft.client.resources.model.ModelResourceLocation;
import net.minecraft.item.Item;
import net.minecraftforge.fml.common.registry.GameRegistry;
public class CarsItems {
public static Item fuel_canister;
public static void init(){
fuel_canister = new Item().setUnlocalizedName("fuel_canister");
}
public static void register(){
GameRegistry.registerItem(fuel_canister, fuel_canister.getUnlocalizedName().substring(5));
}
public static void registerRenders(){
registerRender(fuel_canister);
}
public static void registerRender(Item item){
Minecraft.getMinecraft().getRenderItem().getItemModelMesher().register(item, 0, new ModelResourceLocation(Reference.MOD_ID + ":" + item.getUnlocalizedName().substring(5), "inventory"));
}
}
CommonProxy.java:
package com.fidojj222.carsmod.proxy;
public class CommonProxy {
public void registerRenders(){
}
}
ClientProxy.java:
package com.fidojj222.carsmod.proxy;
import com.fidojj222.carsmod.init.CarsItems;
public class ClientProxy extends CommonProxy {
#Override
public void registerRenders(){
CarsItems.registerRenders();
}
}
What do you mean by not showing? The item isn't found at all in the creative search menu, or it is an untextured (purple/black checkered) block?
If it is untextured, you need to make sure these 2 things are done:
Make sure you have this texture in place src/main/resources/assets/fcm/textures/items/fuel_canister.png it needs to be 16x16 pixels.
Create a fuel_canister.json file at src/main/resources/assets/fcm/models/item/fuel_canister.json This file defines how the image should be rendered ingame.
The contents of that file should be
{
"parent": "builtin/generated",
"textures":{
"layer0":"fcm:items/fuel_canister"
},
"display":{
"thirdperson":{
"rotation":[-90, 0, 0],
"translation":[0, 1, -3],
"scale":[0.55,0.55,0.55]
},
"firstperson":{
"rotation":[0,-135,25],
"translation":[0,4,2],
"scale":[1.7,1.7,1.7]
}
}
}