转载：httpClient的post请求重定向302错误解决

public class TestLogin {
public static void main(String args[]) {
try {
HttpClient client = HttpClients.createDefault();
login(client);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}

public static void login( HttpClient client) throws Exception{
final String APPLICATION_JSON = "application/json";
final String CONTENT_TYPE_TEXT_JSON = "text/json";

String url = "http://172.16.30.208:8092/svc/login";
String js = "{"username":"13800000002","password":"123456"}";

HttpPost httpPost = new HttpPost(url);
httpPost.setHeader("Content-Type", "application/json;charset=UTF-8");

StringEntity se = new StringEntity(js);
se.setContentType(CONTENT_TYPE_TEXT_JSON);

httpPost.setEntity(se);

HttpResponse response = null;

response = client.execute(httpPost);

//----------判断是否重定向开始
int code = response.getStatusLine().getStatusCode();
String newuri="";
if (code == 302) {
Header header = response.getFirstHeader("location"); // 跳转的目标地址是在 HTTP-HEAD 中的
newuri = header.getValue(); // 这就是跳转后的地址，再向这个地址发出新申请，以便得到跳转后的信息是啥。
System.out.println(newuri);
System.out.println(code);

httpPost = new HttpPost(newuri);
httpPost.setHeader("Content-Type", "application/json;charset=UTF-8");

se = new StringEntity(js);
se.setContentType(CONTENT_TYPE_TEXT_JSON);

httpPost.setEntity(se);

response = client.execute(httpPost);
code = response.getStatusLine().getStatusCode();
System.out.println("login"+code);
}

//------------重定向结束
HttpEntity entity = null;
entity = response.getEntity();
String s2 = EntityUtils.toString(entity, "UTF-8");
System.out.println(s2);

}

}
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版权声明：本文为CSDN博主「JadeHanLiang」的原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。
原文链接：https://blog.csdn.net/qq_38497391/article/details/103402736