Question

我在jsp中访问我的java类时遇到了麻烦。

在jsp中：

 <%@ page import="package.ClientWithResponseHandler" %> 
 <% ClientWithResponseHandler jira = new ClientWithResponseHandler();
 System.out.println(jira.getJIRA()); %>

在java中：

public class ClientWithResponseHandler {

 public String getJIRA() throws Exception {
    String string="";
    HttpClient httpclient = new DefaultHttpClient();

        HttpGet httpget = new HttpGet("someURL");

        ResponseHandler<String> responseHandler = new BasicResponseHandler();
        String[] responseBody = httpclient.execute(httpget, responseHandler).replace("[", "").replace("}]","").split("},");
        for (int i=0;i<responseBody.length;i++)
        {
            responseBody[i]+="}";
           JSONObject project= new JSONObject(responseBody[i]);         
   string +=project.getString("name");
   string+="||";
            String url=project.getString("self");
            HttpGet httpget2 = new HttpGet(url);

            String responseBody2 = httpclient.execute(httpget2, responseHandler);
                JSONObject taskall= new JSONObject(responseBody2);
                   JSONArray tasks=taskall.getJSONArray("components");
                   for(int j=0;j<tasks.length();j++)
                   {
                       JSONObject task= tasks.getJSONObject(j);
                           string+=task.getString("name");
                           string+="|";
                   }
        }
    return string;
          }
    }

通过调用getJIRA（）方法，我希望它返回一个我休息的数据字符串。我检查了它，我认为java类确实正常工作并返回一个字符串。当我运行我的jsp页面时，会抛出异常：

HTTP Status 500 - An exception occurred processing JSP page /index.jsp at line 23
23: <% ClientWithResponseHandler jira = new ClientWithResponseHandler();

javax.servlet.ServletException: java.lang.NoClassDefFoundError: org/apache/http/client/ResponseHandler
java.lang.NoClassDefFoundError: org/apache/http/client/ResponseHandler
java.lang.ClassNotFoundException: org.apache.http.client.ResponseHandler

我对编程很新，所以我不知道这是什么意思。如果有人能帮助我，我会非常感激。

Answer 1

似乎您的Apache HTTP Client JAR不在您的Web应用程序类路径中。尝试检查它是否位于WAR文件中的WEB-INF/lib文件夹中。

将数据从java传递给jsp

1 个答案: