Question

HttpResponseException：found

String url = "http://jwxt.sdu.edu.cn:7890/pls/wwwbks/bks_login2.login";
//创建一个默认的HttpClient
CloseableHttpClient httpclient = HttpClients.createDefault();
try {
//以post方式请求网页http://www.yshjava.cn
HttpPost httppost = new HttpPost(url);
//添加HTTP POST参数
List <NameValuePair> nvps = new ArrayList <NameValuePair>();
nvps.add(new BasicNameValuePair("stuid", ""));
nvps.add(new BasicNameValuePair("pwd", ""));

//将POST参数以UTF-8编码并包装成表单实体对象
httppost.setEntity(new UrlEncodedFormEntity(nvps, "UTF-8"));
//打印请求地址
System.out.println("executing request " + httppost.getRequestLine().getUri());
//创建响应处理器处理服务器响应内容
ResponseHandler<String> responseHandler = new BasicResponseHandler();
//执行请求并获取结果
String responseBody = httpclient.execute(httppost, responseHandler);
System.out.println("----------------------------------------");
System.out.println(responseBody);
System.out.println("----------------------------------------");
} finally {
// 当不再需要HttpClient实例时,关闭连接管理器以确保释放所有占用的系统资源
httpclient.getConnectionManager().shutdown();
}

报错：
executing request http://jwxt.sdu.edu.cn:7890/pls/wwwbks/bks_login2.login
Exception in thread "main" org.apache.http.client.HttpResponseException: Found
at org.apache.http.impl.client.BasicResponseHandler.handleResponse(BasicResponseHandler.java:67)
at org.apache.http.impl.client.BasicResponseHandler.handleResponse(BasicResponseHandler.java:52)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:218)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:160)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:136)
at monidenglu.post.main(post.java:62)

为什么啊。。。

Answer 1

你输入了错误的学号或密码，不能登录！

追问

额。。。这个密码和学号我没写。。但是写了以后会报错。。。。

追答

因为服务器给你发回了不是http 200，所以抛出了异常
你可以这样写：
new BasicResponseHandler()
{

public String handleResponse(final HttpResponse response)
throws HttpResponseException, IOException {
StatusLine statusLine = response.getStatusLine();
}
//然后看看到底是返回的错误码是多少

}

追问

返回302，还要继续操作吗？可是我记得httpclient不是可以自动处理重定向的吗？