Java模拟表单post提交 HttpClient
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2024-03-23 10:10:34
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http://www.xuehuile.com/blog/7b029a62311a45819ed4a0deae43a3a9.html
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import org.apache.commons.httpclient.Header;
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpException;
import org.apache.commons.httpclient.HttpStatus;
import org.apache.commons.httpclient.NameValuePair;
import org.apache.commons.httpclient.methods.PostMethod;
public class SendPostMethod {
public String methodPost(String url,NameValuePair[] data){
String response= "";//要返回的response信息
HttpClient httpClient = new HttpClient();
PostMethod postMethod = new PostMethod(url);
// 将表单的值放入postMethod中
postMethod.setRequestBody(data);
// 执行postMethod
int statusCode = 0;
try {
statusCode = httpClient.executeMethod(postMethod);
} catch (HttpException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
// HttpClient对于要求接受后继服务的请求,象POST和PUT等不能自动处理转发
// 301或者302
if (statusCode == HttpStatus.SC_MOVED_PERMANENTLY
|| statusCode == HttpStatus.SC_MOVED_TEMPORARILY) {
// 从头中取出转向的地址
Header locationHeader = postMethod.getResponseHeader("location");
String location = null;
if (locationHeader != null) {
location = locationHeader.getValue();
System.out.println("The page was redirected to:" + location);
response= methodPost(location,data);//用跳转后的页面重新请求。
} else {
System.err.println("Location field value is null.");
}
} else {
System.out.println(postMethod.getStatusLine());
try {
response= postMethod.getResponseBodyAsString();
} catch (IOException e) {
e.printStackTrace();
}
postMethod.releaseConnection();
}
return response;
}
public static void main(String[] args) throws UnsupportedEncodingException {
String url = "http://localhost/uchome/sendapi.php";
NameValuePair name=new NameValuePair("name", "allen");
NameValuePair password=new NameValuePair("password", "allen");
NameValuePair[] data = {name,password};
String response=new SendPostMethod().methodPost(url,data);
System.out.println("********"+response);
}
}
其中需要的jar包:
1、 commons-httpclient-3.1-rc1.zip http://jakarta.apache.org/commons/httpclient/downloads.html
2、commons-codec-1.3.jar http://jakarta.apache.org/site/downloads/downloads_commons-codec.cgi
3、commons-logging-api.jar 在tomcat5.5中的Tomcat 5.5\bin目录下或者 http://jakarta.apache.org/site/downloads/downloads_commons-logging.cgi