Question

所以我尝试使用Java通过REST API检索有关Jira问题的信息，但是我不断收到400错误。我觉得我错过了一些非常愚蠢的东西，任何人都可以帮我找出这个有什么问题吗？编辑：我意识到我没有在Java程序中向Jira发送用户名/密码，但我实际上不确定如何做到这一点......这里的帮助会很棒！这是我的代码（公司名称编辑）：

import java.io.*;
import java.net.*;
import java.util.*;

public class JiraConnector 
{
    public static void main(String[] args)
    {
        try {
            //store necessary query information
            URL jiraURL = new URL("http://jira.somecompany.com/rest/api/2/search");
            String data = "'{\"jql\":\"project = PROJ\"}'";

            //establish connection and request properties
            HttpURLConnection connection = (HttpURLConnection)jiraURL.openConnection();
            connection.setRequestMethod("POST");
            connection.setRequestProperty("Accept", "*/*");
            connection.setRequestProperty("Content-Type", "application/json");
            connection.setDoOutput(true);
            connection.setDoInput(true);

            connection.connect();

            OutputStreamWriter wr = new OutputStreamWriter(connection.getOutputStream());
            wr.write(data.toString());
            wr.flush();
            wr.close();

            Reader in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
            for (int c; (c = in.read()) >= 0; System.out.print((char)c));

        } catch (MalformedURLException e) {
            System.err.println("MalformedURLException: " + e.getMessage());
        } catch (java.net.UnknownServiceException e) {
            System.err.println("UnknownServiceException: " + e.getMessage());
        } catch (IOException e) {
            System.err.println("IOException: " + e.getMessage());
        }        
    }
}

对于记录，使用此curl命令可以：

curl -D- -u- user:password -X POST -H "Content-Type: application/json" --data '{"jql:"project=PROF"}' "http://jira.somecompany.com/rest/api/2/search"

Answer 1

一般提示：首先使用带有TamperData附加组件的FireFox，它可以跟踪常规表单提交，并检查所有内容。在您的情况下，代理监视器可能更多的帮助。也：

curl --trace-ascii ...

TamperData将显示出错的地方。

没有编码参数，采用当前平台编码;非便携式的。

OutputStreamWriter wr = new OutputStreamWriter(connection.getOutputStream(),
        StandardCharsets.UTF_8);
Reader in = new BufferedReader(new InputStreamReader(
        connection.getInputStream(),
        StandardCharsets.UTF_8));

Answer 2

您在帖子数据中似乎有额外的单引号。

而不是：

String data = "'{\"jql\":\"project = PROJ\"}'";

试试这个：

String data = "{\"jql\":\"project = PROJ\"}";

顺便说一句，即使您收到400 Bad Request，JIRA仍然提供有助于本地化错误的有用信息。您可以使用连接的getErrorStream方法查看它。如果我们快速将其写入您的代码：

import java.io.*;
import java.net.*;
import java.util.*;

public class JiraConnector 
{
    public static void main(String[] args)
    {
        HttpURLConnection connection = null;
        try {
            //store necessary query information
            URL jiraURL = new URL("http://127.0.0.1:8082/rest/api/2/search");
            String data = "{\"jql\":\"project = PROJ\"}";

            //establish connection and request properties
            connection = (HttpURLConnection)jiraURL.openConnection();
            connection.setRequestMethod("POST");
            connection.setRequestProperty("Accept", "*/*");
            connection.setRequestProperty("Content-Type", "application/json");
            connection.setDoOutput(true);
            connection.setDoInput(true);

            connection.connect();

            OutputStreamWriter wr = new OutputStreamWriter(connection.getOutputStream());
            wr.write(data.toString());
            wr.flush();
            wr.close();

            Reader in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
            for (int c; (c = in.read()) >= 0; System.out.print((char)c));

        } catch (MalformedURLException e) {
            System.err.println("MalformedURLException: " + e.getMessage());
        } catch (java.net.UnknownServiceException e) {
            System.err.println("UnknownServiceException: " + e.getMessage());
        } catch (IOException e) {
            System.err.println("IOException: " + e.getMessage());
            if (connection != null) {
                try {
                    System.out.println(connection.getResponseMessage());

                    InputStream errorStream = connection.getErrorStream();
                    if (errorStream != null) {
                        Reader in = new BufferedReader(new InputStreamReader(errorStream));
                        for (int c; (c = in.read()) >= 0; System.out.print((char)c));
                    }
                }
                catch (IOException e2) {
                }
            }
        }        
    }
}

如果您要对REST API进行任何认真的工作，我建议您使用Jersey而不是尝试自己动手。

Answer 3

抬头，问题是授权（如果有人也遇到这个问题）。完全没有用，忘了发送用户名/密码。

Answer 4

添加基本授权标题非常简单：

HttpURLConnection connection = (HttpURLConnection)jiraURL.openConnection();
String userCredentials = "username:password";
String basicAuth = "Basic " + new String(new Base64().encode(userCredentials.getBytes()));
connection.setRequestProperty ("Authorization", basicAuth);

使用Java向JIRA发出HTTP POST请求会产生400个错误的请求错误，curl工作正常

4 个答案: