Java 400错误请求-将JSON数据发布到RESTful控制器时_Java_Json_Rest_Spring Mvc

Java 400错误请求-将JSON数据发布到RESTful控制器时

java json rest spring-mvc

Java 400错误请求-将JSON数据发布到RESTful控制器时,java,json,rest,spring-mvc,Java,Json,Rest,Spring Mvc,我试图将一些JSON数据发布到RESTful spring控制器。但得到400个错误请求作为响应状态给出了我用于此目的的密钥配置文件中的以下代码： pom.xml依赖项： enter code here <properties> <org.springframework-version>4.1.4.RELEASE</org.springframework-version> </properties> <!-- Spring --&

我试图将一些JSON数据发布到RESTful spring控制器。但得到400个错误请求作为响应状态

给出了我用于此目的的密钥配置文件中的以下代码：

pom.xml依赖项：

enter code here <properties>
    <org.springframework-version>4.1.4.RELEASE</org.springframework-version>
</properties>

<!-- Spring -->
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-context</artifactId>
    <version>${org.springframework-version}</version>
    <exclusions>
        <!-- Exclude Commons Logging in favor of SLF4j -->
        <exclusion>
            <groupId>commons-logging</groupId>
            <artifactId>commons-logging</artifactId>
        </exclusion>
    </exclusions>
</dependency>
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-webmvc</artifactId>
    <version>${org.springframework-version}</version>
</dependency>

<!-- Servlet -->
<dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>servlet-api</artifactId>
    <version>2.5</version>
    <scope>provided</scope>
</dependency>
<dependency>
    <groupId>javax.servlet.jsp</groupId>
    <artifactId>jsp-api</artifactId>
    <version>2.1</version>
    <scope>provided</scope>
</dependency>
<dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>jstl</artifactId>
    <version>1.2</version>
</dependency>

<!-- json -->
<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-core</artifactId>
    <version>2.4.1</version>
</dependency>
<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-databind</artifactId>
    <version>2.4.1.1</version>
</dependency>
<dependency>
    <groupId>org.codehaus.jackson</groupId>
    <artifactId>jackson-core-asl</artifactId>
    <version>1.9.13</version>
</dependency>
<dependency>
    <groupId>org.codehaus.jackson</groupId>
    <artifactId>jackson-mapper-asl</artifactId>
    <version>1.9.13</version>
</dependency>

Beaconva：

public class BeaconVO {

private int no;

private String uuid;

public int getNo() {
    return no;
}

public void setNo(int no) {
    this.no = no;
}

public String getUuid() {
    return uuid;
}

public void setUuid(String uuid) {
    this.uuid = uuid;
}

}

客户端代码android

public class MainActivity extends Activity {
private static final String URL = "http://192.168.1.24:8080/test/api/beacons";
Button btnGet, btnPost;
TextView tv;

JSONObject json;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    btnGet = (Button) findViewById(R.id.btnGet);
    btnPost = (Button) findViewById(R.id.btnPost);
    tv = (TextView) findViewById(R.id.tv);

    btnGet.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            new Thread(new Runnable() {

                @Override
                public void run() {
                    // TODO Auto-generated method stub
                    try {
                        String jsonData = getJSONData(URL, "GET");
                        if (jsonData == null || jsonData.isEmpty()) {
                            return;
                        }
                        JSONArray jsonArray = new JSONArray(jsonData);
                        json = jsonArray.getJSONObject(0);
                        StringBuilder sb = new StringBuilder();
                        sb.append("no / UUID\n");
                        for (int i = 0; i < jsonArray.length(); i++) {

                            JSONObject jsonObject = (JSONObject) jsonArray.get(i);

                            sb.append(jsonObject.getString("no") + " / " + jsonObject.getString("uuid"));
                            sb.append("\n");

                        }
                        setText(json.toString(), false);
                    } catch (JSONException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                        setText(e.toString(), true);
                    }
                }
            }).start();

        }
    });

    btnPost.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            new Thread(new Runnable() {

                @Override
                public void run() {
                    // setJSONData(URL, "POST", json.toString());
                    POST(URL, json.toString());
                }
            }).start();
        }
    });
}


public void POST(String strUrl, String jsonData) {
    try {
        URL url = new URL(strUrl);
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        connection.setConnectTimeout(5000);// 5 secs
        connection.setReadTimeout(5000);// 5 secs

        connection.setRequestMethod("POST");
        connection.setDoOutput(true);
        connection.setRequestProperty("Content-Type", "application/json");

        InputStream is = null;
        int status = connection.getResponseCode();
        if (status >= HttpURLConnection.HTTP_BAD_REQUEST) {
            is = connection.getErrorStream();
        } else {
            is = connection.getInputStream();
        }
        if (connection.getResponseCode() != 200) {
            throw new RuntimeException("Failed : HTTP error code : " + connection.getResponseCode());
        }
        OutputStreamWriter out = new OutputStreamWriter(connection.getOutputStream());

        out.write(jsonData);
        out.flush();
        out.close();

        BufferedReader br = new BufferedReader(new InputStreamReader(is));
        String line = null;
        while ((line = br.readLine()) != null) {
            System.out.println(line);
        }
        connection.disconnect();
    } catch (Exception e) {
        // TODO: handle exception
        e.printStackTrace();
        setText(e.toString(), true);
    }
}

private String getJSONData(String url, String method) {
    try {
        InputStream is = getInputStream(url, method);
        BufferedReader br = new BufferedReader(new InputStreamReader(is));
        StringBuilder sb = new StringBuilder();
        int bufferSize = 1024 * 1024;
        char[] readBuf = new char[bufferSize];
        int resultSize = 0;
        while ((resultSize = br.read(readBuf)) != -1) {
            if (resultSize == bufferSize) {
                sb.append(readBuf);
            } else {
                for (int i = 0; i < resultSize; i++) {
                    sb.append(readBuf[i]);
                }
            }
        }
        final String jsonData = sb.toString();
        setText(jsonData, false);

        is.close();
        return jsonData;
    } catch (Exception e) {
        e.printStackTrace();
        setText(e.toString(), true);
        return null;
    }
}


private InputStream getInputStream(String strUrl, String method) {
    InputStream is;
    try {
        log("getInputStream(" + strUrl + ", " + method + ")");
        URL url = new URL(strUrl);
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();

        connection.setRequestMethod(method);
        connection.setRequestProperty("Accept", "application/json");

        int status = connection.getResponseCode();
        if (status >= HttpURLConnection.HTTP_BAD_REQUEST) {
            is = connection.getErrorStream();
        } else {
            is = connection.getInputStream();
        }
        if (connection.getResponseCode() != 200) {
            throw new RuntimeException("Failed : HTTP error code : " + connection.getResponseCode());
        }

    } catch (Exception e) {
        e.printStackTrace();
        setText(e.toString(), true);
        return null;
    }
    return is;
}

StringBuilder sb = new StringBuilder();

private void setText(final String msg, final boolean isError) {
    runOnUiThread(new Runnable() {

        @Override
        public void run() {
            if (isError) {
                sb.append(msg);
                sb.append("\n");
                tv.setText("\n-------------------\n"+sb.toString());
            } else {
                tv.setText(msg);
            }
        }
    });
}

}

请帮助我。

负载主体可能无法设置为映射到Beaconva对象

GET请求有效吗？你能给我看一下Beaconva的课程吗？日志中也应该有更多信息。我认为您的请求缺少内容类型标题。内容类型：application/jsonGET请求运行良好。我添加了BeaConva是否启用了安全性？我不触摸安全设置我已经检查了BeaConva字段。并尝试删除@RequestBody，但得到500个错误请求作为响应状态。我很确定JSON无法映射到此对象。在这个有效负载{no:1 uuid:123}中，1后面应该有一个逗号。除了json中缺少逗号和注释中指出的缺少标题内容类型：application/json之外，这应该很有效。对不起，伙计们，我的问题是Beaconva中的setter方法。感谢您的建议我们也遇到了同样的问题，并通过明确定义默认构造函数进行了修复。如果重载构造函数，请确保提供默认构造函数以避免此问题。

    URL:http: // localhost:8080/test/api/beacons

    Method:
    POST

    Headers:Accept:application/
    json

    Payload:

{
    "no": 1 ,
    "uuid": "123"
    }

public class BeaconVO {

private int no;

private String uuid;

public int getNo() {
    return no;
}

public void setNo(int no) {
    this.no = no;
}

public String getUuid() {
    return uuid;
}

public void setUuid(String uuid) {
    this.uuid = uuid;
}

public class MainActivity extends Activity {
private static final String URL = "http://192.168.1.24:8080/test/api/beacons";
Button btnGet, btnPost;
TextView tv;

JSONObject json;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    btnGet = (Button) findViewById(R.id.btnGet);
    btnPost = (Button) findViewById(R.id.btnPost);
    tv = (TextView) findViewById(R.id.tv);

    btnGet.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            new Thread(new Runnable() {

                @Override
                public void run() {
                    // TODO Auto-generated method stub
                    try {
                        String jsonData = getJSONData(URL, "GET");
                        if (jsonData == null || jsonData.isEmpty()) {
                            return;
                        }
                        JSONArray jsonArray = new JSONArray(jsonData);
                        json = jsonArray.getJSONObject(0);
                        StringBuilder sb = new StringBuilder();
                        sb.append("no / UUID\n");
                        for (int i = 0; i < jsonArray.length(); i++) {

                            JSONObject jsonObject = (JSONObject) jsonArray.get(i);

                            sb.append(jsonObject.getString("no") + " / " + jsonObject.getString("uuid"));
                            sb.append("\n");

                        }
                        setText(json.toString(), false);
                    } catch (JSONException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                        setText(e.toString(), true);
                    }
                }
            }).start();

        }
    });

    btnPost.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            new Thread(new Runnable() {

                @Override
                public void run() {
                    // setJSONData(URL, "POST", json.toString());
                    POST(URL, json.toString());
                }
            }).start();
        }
    });
}


public void POST(String strUrl, String jsonData) {
    try {
        URL url = new URL(strUrl);
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        connection.setConnectTimeout(5000);// 5 secs
        connection.setReadTimeout(5000);// 5 secs

        connection.setRequestMethod("POST");
        connection.setDoOutput(true);
        connection.setRequestProperty("Content-Type", "application/json");

        InputStream is = null;
        int status = connection.getResponseCode();
        if (status >= HttpURLConnection.HTTP_BAD_REQUEST) {
            is = connection.getErrorStream();
        } else {
            is = connection.getInputStream();
        }
        if (connection.getResponseCode() != 200) {
            throw new RuntimeException("Failed : HTTP error code : " + connection.getResponseCode());
        }
        OutputStreamWriter out = new OutputStreamWriter(connection.getOutputStream());

        out.write(jsonData);
        out.flush();
        out.close();

        BufferedReader br = new BufferedReader(new InputStreamReader(is));
        String line = null;
        while ((line = br.readLine()) != null) {
            System.out.println(line);
        }
        connection.disconnect();
    } catch (Exception e) {
        // TODO: handle exception
        e.printStackTrace();
        setText(e.toString(), true);
    }
}

private String getJSONData(String url, String method) {
    try {
        InputStream is = getInputStream(url, method);
        BufferedReader br = new BufferedReader(new InputStreamReader(is));
        StringBuilder sb = new StringBuilder();
        int bufferSize = 1024 * 1024;
        char[] readBuf = new char[bufferSize];
        int resultSize = 0;
        while ((resultSize = br.read(readBuf)) != -1) {
            if (resultSize == bufferSize) {
                sb.append(readBuf);
            } else {
                for (int i = 0; i < resultSize; i++) {
                    sb.append(readBuf[i]);
                }
            }
        }
        final String jsonData = sb.toString();
        setText(jsonData, false);

        is.close();
        return jsonData;
    } catch (Exception e) {
        e.printStackTrace();
        setText(e.toString(), true);
        return null;
    }
}


private InputStream getInputStream(String strUrl, String method) {
    InputStream is;
    try {
        log("getInputStream(" + strUrl + ", " + method + ")");
        URL url = new URL(strUrl);
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();

        connection.setRequestMethod(method);
        connection.setRequestProperty("Accept", "application/json");

        int status = connection.getResponseCode();
        if (status >= HttpURLConnection.HTTP_BAD_REQUEST) {
            is = connection.getErrorStream();
        } else {
            is = connection.getInputStream();
        }
        if (connection.getResponseCode() != 200) {
            throw new RuntimeException("Failed : HTTP error code : " + connection.getResponseCode());
        }

    } catch (Exception e) {
        e.printStackTrace();
        setText(e.toString(), true);
        return null;
    }
    return is;
}

StringBuilder sb = new StringBuilder();

private void setText(final String msg, final boolean isError) {
    runOnUiThread(new Runnable() {

        @Override
        public void run() {
            if (isError) {
                sb.append(msg);
                sb.append("\n");
                tv.setText("\n-------------------\n"+sb.toString());
            } else {
                tv.setText(msg);
            }
        }
    });
}