java - Android 中 JsonObjectRequest 错误 500

标签 java android json

在将 JSON 对象发送到我的服务器期间，我遇到了错误 500。我使用 POST 方法是因为我需要将用户保存在数据库中。我想我的请求中有问题导致输出不打印(在 onResponse 方法中)。在服务器端，数据也没有打印，但没有异常处理，没有错误 - 一切正常，但数据仍然不存在!

Android注册方法:

public class RegisterIndividualActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_register_individual);
        setListeners();
    }

    private void setListeners() {
        final EditText loginField = (EditText) findViewById(R.id.loginField);
        final EditText passwordField = (EditText) findViewById(R.id.passwordField);

        Button registerButton = (Button) findViewById(R.id.registerButton);

        registerButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                register(
                        loginField.getText(),
                        passwordField.getText(),
                );
            }
        });
    }

    private void register(final Editable login,
                          final Editable password){
        final ProgressDialog progressDialog = new ProgressDialog(this);
        progressDialog.setMessage("Creating new acc...");
        progressDialog.show();

        RequestQueue queueAcc = Volley.newRequestQueue(this);
        String urlAcc = getResources().getString(R.string.server_address)+"android/user/register?login="
                + login.toString() + "&password=" + password.toString();


        JSONObject newUser = new JSONObject();
        try {
            newUser.put("login", login.toString());
            newUser.put("password", password.toString());
        } catch (JSONException e) {
            e.printStackTrace();
        }
        System.out.println("USER TO SAVE: " + newUser.toString());
        JsonObjectRequest urlAccStringRequest = new JsonObjectRequest(Request.Method.POST, urlAcc, newUser, new Response.Listener<JSONObject>() {
            @Override
            public void onResponse(JSONObject response) {
                        System.out.println("Good morning " + login.toString()); //doesnt print

                    }
                }, new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError error) { //i got this error
                progressDialog.dismiss();
                Toast.makeText(RegisterIndividualActivity.this, "Connection error", Toast.LENGTH_SHORT).show();
            }
        });

        queueAcc.add(urlAccStringRequest);

        queueAcc.start();
    }
}

服务器端的 Controller (这是带有 @Controller 注释的正确类，并且需要映射为 android/user):

@RequestMapping(value = "/register", method = RequestMethod.POST)
public void register(
        @RequestParam("login") String login,
        @RequestParam("password") String password,
        HttpServletRequest request, HttpServletResponse response, Model model
){
    System.out.println("\nIn Register method..");
    UserModel uM = new UserModel();
    HttpSession session = request.getSession(true);
    response.setContentType("application/json");
    response.setCharacterEncoding("UTF-8");
    uM.setAccountType("Client");
    JsonParser parser = new JsonParser();
    try {
        System.out.println("\nTrying to save..");
        JsonObject jsonObject = (JsonObject) parser.parse(request.getReader());
        System.out.println(jsonObject.get("login").toString()); //event this doesnt print
        uM.setLogin(jsonObject.get("login").toString());
        uM.setPassword(jsonObject.get("password").toString());
        System.out.println(uM.toString()); //doesnt print
        userDAO.save(uM);
    } catch (IOException e) { // doesnt throw exception
        e.printStackTrace();
    }


    System.out.println(uM.toString()); // doesnt print

}

@EDIT添加了服务器日志:

19-Jun-2017 19:42:22.757 SEVERE [http-nio-8080-exec-1] org.apache.catalina.core.StandardWrapperValve.invoke Servlet.service() for servlet [spring-mvc] in context with path [] threw exception [Request processing failed; nested exception is java.lang.ClassCastException: com.google.gson.JsonObject cannot be cast to javax.json.JsonObject] with root cause
 java.lang.ClassCastException: com.google.gson.JsonObject cannot be cast to javax.json.JsonObject
    at com.mvc.controller.AndroidUserController.register(AndroidUserController.java:145)
    at com.mvc.controller.AndroidUserController$$FastClassBySpringCGLIB$$448b2d05.invoke(<generated>)
    at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
    at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:720)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
    at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:98)
    at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:262)
    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:95)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
    at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:655)
    at com.mvc.controller.AndroidUserController$$EnhancerBySpringCGLIB$$47d3305.register(<generated>)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221)
    at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:136)
    at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110)
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:817)
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:731)
    at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959)
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:968)
    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:870)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:661)
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:844)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:478)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)
    at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:624)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:799)
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:861)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1455)
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Thread.java:745)

@编辑2

这是将 try-catch block 更改为以下内容后的服务器日志:

 try {
        System.out.println("\nTrying to save..");
        JsonObject jsonObject = (JsonObject) parser.parse(request.getReader());
        System.out.println(jsonObject.get("login").toString()); //event this doesnt print

    } catch (IOException e) { // doesnt throw exception
        e.printStackTrace();
    }

服务器日志:

at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:624)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:799)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:861)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1455)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)

@编辑3!!!

我发现这一行与第二个服务器日志中显示的错误相同:

JsonObject jsonObject = (JsonObject) parser.parse(request.getReader());

这有什么问题吗？

@编辑4

这是我当前读取 json 的代码:

try {
            System.out.println("\nTrying to save...");
            InputStream inputStream = request.getInputStream();
            JsonReader reader = Json.createReader(inputStream); //this is were error is 
            reader.close();
//            JsonObject jsonObject = reader.readObject();
//            reader.close();
//            System.out.println(jsonObject.get("login").toString()); 
////            uM.setLogin(jsonObject.get("login").toString());
//            uM.setPassword(jsonObject.get("password").toString());
//            System.out.println(uM.toString()); 
//            userDAO.save(uM);
        } catch (IOException e) { 
            e.printStackTrace();
        }

这是当前服务器日志:

    19-Jun-2017 21:36:34.490 INFO [RMI TCP Connection(3)-127.0.0.1] org.apache.catalina.core.ApplicationContext.log No Spring WebApplicationInitializer types detected on classpath
19-Jun-2017 21:36:34.617 INFO [RMI TCP Connection(3)-127.0.0.1] org.apache.catalina.core.ApplicationContext.log Initializing Spring root WebApplicationContext
19-Jun-2017 21:36:46.631 INFO [RMI TCP Connection(3)-127.0.0.1] org.apache.catalina.core.ApplicationContext.log Initializing Spring FrameworkServlet 'spring-mvc'
19-Jun-2017 21:36:57.007 SEVERE [http-nio-8080-exec-4] org.apache.catalina.core.StandardWrapperValve.invoke Servlet.service() for servlet [spring-mvc] in context with path [] threw exception [Request processing failed; nested exception is javax.json.JsonException: Provider org.glassfish.json.JsonProviderImpl not found] with root cause
 java.lang.ClassNotFoundException: org.glassfish.json.JsonProviderImpl
    at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1285)
    at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1119)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:264)
    at javax.json.spi.JsonProvider.provider(JsonProvider.java:94)
    at javax.json.Json.createReader(Json.java:220)
    at com.mvc.controller.AndroidUserController.register(AndroidUserController.java:146)
    at com.mvc.controller.AndroidUserController$$FastClassBySpringCGLIB$$448b2d05.invoke(<generated>)
    at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
    at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:720)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
    at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:98)
    at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:262)
    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:95)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
    at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:655)
    at com.mvc.controller.AndroidUserController$$EnhancerBySpringCGLIB$$f920f9fc_2.register(<generated>)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221)
    at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:136)
    at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110)
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:817)
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:731)
    at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959)
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:968)
    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:870)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:661)
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:844)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:478)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)
    at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:624)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:799)
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:861)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1455)
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Thread.java:745)

最佳答案

com.google.gson.JsonObject 无法转换为 javax.json.JsonObject

您似乎导入了错误的 JsonObject 类

如果您使用的是 Gson，则这不是 how to parse JSON with it 

JsonObject jsonObject = (JsonObject) parser.parse(request.getReader());

关于java - Android 中 JsonObjectRequest 错误 500，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/44636492/

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