Java利用HttpClient模拟POST表单操作应用及注意事项
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2024-03-09 13:48:23
httpclient使用post方法提交数据 源代码：
复制代码 代码如下:
package post;
import java.io.ioexception;
i...
httpclient使用post方法提交数据 源代码：
复制代码 代码如下:
package post;
import java.io.ioexception;
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 posthttp {
/**
* @param args
*/
public static void main(string[] args) {
// todo auto-generated method stub
httpclient httpclient = new httpclient();
string url = "";
postmethod postmethod = new postmethod(url);
// 填入各个表单域的值
namevaluepair[] data = {
new namevaluepair("id", "11"),
new namevaluepair("mtg", "0"),
new namevaluepair("havecookie", "0"),
new namevaluepair("backid", "30"),
new namevaluepair("psw", "password")
};
// 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) {
// todo auto-generated catch block
e.printstacktrace();
} catch (ioexception e) {
// todo auto-generated catch block
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);
}
else {
system.err.println("location field value is null.");
}
return;
}
else
{
system.out.println(postmethod.getstatusline());
string str = "";
try {
str = postmethod.getresponsebodyasstring();
} catch (ioexception e) {
// todo auto-generated catch block
e.printstacktrace();
}
system.out.println(str);
}
postmethod.releaseconnection();
return ;
}
}
//这是一个用户认证过程的登陆信息
其中需要的jar包：
1、commons-httpclient-3.1-rc1.zip
2、commons-codec-1.3.jar
3、commons-logging-api.jar 在tomcat5.5中的tomcat 5.5/bin目录下或者