高手们，帮帮我吧，实在是做不出了。

Question

关于HttpClient的
PostMethod method = new PostMethod("http://202.106.139.25/HBE/servlet/tdplogicbookingcontroller");一写到这一句的时候就出现java.lang.NoClassDefFoundError: org/apache/commons/codec/DecoderException
 org.apache.commons.httpclient.HttpMethodBase.<init>(Unknown Source)
 org.apache.commons.httpclient.methods.ExpectContinueMethod.<init>(Unknown Source)
 org.apache.commons.httpclient.methods.EntityEnclosingMethod.<init>(Unknown Source)
 org.apache.commons.httpclient.methods.PostMethod.<init>(Unknown Source)
 net.action.jcclass.postinformation(jcclass.java:77)
 org.apache.jsp.news_jsp._jspService(news_jsp.java:71)
 org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
 javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
 org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
 org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
 org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
 javax.servlet.http.HttpServlet.service(HttpServlet.java:80

Answer 1

package net.action;
import java.util.*;
import java.sql.*;
import java.io.*;
import java.util.ResourceBundle;
import java.text.*;
import java.io.IOException;
import org.apache.commons.httpclient.*;
import org.apache.commons.httpclient.methods.GetMethod;
import org.apache.commons.httpclient.params.HttpMethodParams;
import org.apache.commons.httpclient.methods.PostMethod;
public class jcclass
{
public static ResourceBundle bundle=ResourceBundle.getBundle("tis");
public static String url=bundle.getString("conn");
Connection con=null;
Statement stmt=null;
public jcclass(){
     try{ Class.forName("org.gjt.mm.mysql.Driver").newInstance();
          }catch(Exception e){}
     try{
            con= DriverManager.getConnection(url);
            stmt=con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE);
          }catch(SQLException e){}
        }
/*提交xml*/
         public ArrayList postinformation(int temp){
         ArrayList newsList = new ArrayList();
 String req = "<OTRequest>"+
 "<TransactionName>HotelSearch</TransactionName>"+
 "<Header>"+
 "<SessionID>1111111111</SessionID>"+
 "<Invoker>HBE</Invoker>"+
 "</Header>"+
 "<IdentityInfo>"+
 "<OfficeID>NATEST</OfficeID>"+
 "<UserID>aaa</UserID>"+
 "<Password></Password>"+
 "</IdentityInfo>"+
 "<ScrollingInfo>"+
 "<DisplayReq>30</DisplayReq>"+
 "<PageItems>10</PageItems>"+
 "<PageNo>1</PageNo>"+
 "</ScrollingInfo>"+
 "<SearchConditions>"+
 "<GDS></GDS>"+
 "<CheckInDate>20060428</CheckInDate>"+
 "<CheckOutDate>20060429</CheckOutDate>"+
 "<PropertyDetail>"+
 "<CityCode>PEK</CityCode>"+
 "<Supplier></Supplier>"+
 "<PropertyName>王府</PropertyName>"+
 //"<PropertyName/>"+
"<Transportation/>"+
"<PorName/>"+
"<AreaCode/>"+
"<RankCode/>"+
"</PropertyDetail>"+
"<RateDetail>"+
"<PaymentType/>"+
"<Currency></Currency>"+
"<RateMin></RateMin>"+
"<RateMax></RateMax>"+
"<RateCode/>"+
"</RateDetail>"+
"<RoomDetail></RoomDetail>"+
"</SearchConditions>"+
"</OTRequest>";
System.out.println(req);
HttpClient client = new HttpClient();
PostMethod method = new PostMethod("http://202.106.139.25/HBE/servlet/tdplogicbookingcontroller");
method.setParameter("request",req);
DefaultMethodRetryHandler retryhandler = new DefaultMethodRetryHandler();
retryhandler.setRequestSentRetryEnabled(false);
retryhandler.setRetryCount(1);
method.setMethodRetryHandler(retryhandler);
        try {            client.executeMethod(method);
            InputStream is = method.getResponseBodyAsStream();            BufferedReader reader = new BufferedReader(new InputStreamReader(is,"GB2312"));
            StringBuffer s = new StringBuffer();
            String tmp;
            while((tmp=reader.readLine())!=null) {
               s.append(tmp);
            }
            System.out.println(s.toString());
            Map map = new HashMap();
            map.put("input",s.toString());
            newsList.add(map);
            return newsList;
          }
          catch (Exception e) {
            e.printStackTrace();
     }
            return newsList;
        }
/*提交xml*/
}

Answer 2

org/apache/commons/codec/DecoderException，该包是否已添加到工程中？找不到DecoderException类。

Answer 3

PostMethod method = new PostMethod
改为
PostMethod method = new PostMethod();

Answer 4

压根就没有org/apache/commons/codec/DecoderException这个包的。
PostMethod method = new PostMethod();这样改的确会来，但那网址在哪里写呢?

Answer 5

http://202.106.139.25/HBE/servlet/tdplogicbookingcontroller
这个这个
还有一些参数，就在上面的reg

Answer 6

我现在把代码写在jsp文件里了
就六句话        HttpClient client = new HttpClient();  
        HttpMethod method = new GetMethod("http://127.0.0.1:8080/1.jsp"); 
        client.executeMethod(method); 
        System.out.println(method.getStatusLine()); 
        System.out.println(method.getResponseBodyAsString()); 
        method.releaseConnection(); 但是出来的东西是
java.lang.NoClassDefFoundError: org/apache/commons/codec/DecoderException
org.apache.commons.httpclient.HttpMethodBase.<init>(Unknown Source)
org.apache.commons.httpclient.methods.GetMethod.<init>(Unknown Source)
org.apache.jsp._3_jsp._jspService(_3_jsp.java:87)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

Answer 7

应该是你没有把包commons加到工程的classpath里面
如果在jsp里面要加入到web服务器的lib路径里面

Answer 8

java.lang.NoClassDefFoundError
兄弟,以后看到这个直接看看是不是没有支持包.没跑的.
另外,apache/commons系列的东西应该抽时间了解个大概