求救：为什么我的jsp页面得不到action的数据

web.xml配置文件
<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_9" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<display-name>stock_test</display-name>
<filter>
<filter-name>struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
</welcome-file-list>
</web-app>

解决方案 »

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struts.xml文件
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
<package name="stock_test" extends="struts-default">
<action name="stock" class="com.cn.Stock">
<result>/success.jsp</result>
</action>
</package>
</struts>
action中调用service后有数据吗？
这是我的action文件：stock.javapackage com.cn;import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;import com.opensymphony.xwork2.ActionSupport;public class Stock extends ActionSupport{
String name;
String stockId;
String dvalence;
String gdvalue;
String gdrange;
    public void setName(String name) {
this.name = name;
} public void setStockId(String stockId) {
this.stockId = stockId;
} public void setDvalence(String dvalence) {
this.dvalence = dvalence;
} public void setGdvalue(String gdvalue) {
this.gdvalue = gdvalue;
} public void setGdrange(String gdrange) {
this.gdrange = gdrange;
} public String getGdrange() {
return gdrange;
} public String getGdvalue() {
return gdvalue;
} public String getDvalence() {
return dvalence;
} public String getStockId() {
return stockId;
} public String getName() {
return name;
} private static String getStaticPage(String surl) {
        String htmlContent = "";
        try {
            java.io.InputStream inputStream;
            java.net.URL url = new java.net.URL(surl);
            java.net.HttpURLConnection connection = (java.net.HttpURLConnection) url
                    .openConnection();
            connection.connect();
            inputStream = connection.getInputStream();
            byte[] bytes = new byte[1024 * 2000];
            int index = 0;
            int count = inputStream.read(bytes, index, 1024 * 2000);
            while (count != -1) {
                index += count;
                count = inputStream.read(bytes, index, 1);
            }
            htmlContent = new String(bytes, "GB18030");
            connection.disconnect();
        } catch (Exception ex) {
            ex.printStackTrace();
        }
        return htmlContent.trim();
    }
       public String execute() throws IOException {

            String src = getStaticPage("http://hq.sinajs.cn/list=s_sh600058");
            File file = new File("D:\\a.txt");
            FileWriter resultFile = new FileWriter(file);
            PrintWriter myFile = new PrintWriter(resultFile);// 写文件
            myFile.println(src);
            resultFile.close();
            myFile.close();

         FileReader fs = new FileReader(file);
         BufferedReader in = new BufferedReader(fs);
         String str = in.readLine();
         String s[] = str.split("\"");
         String strs[] = s[1].split(",");
         String name = strs[0];//股票名称
         String stockId = "600058";
         String dvalence = strs[1];  //成交价
         String gdvalue = strs[2];  //跌涨值
         String gdrange = strs[3];   //跌涨幅
         return SUCCESS;



    }
}
这是我的success.jsp:<%@ page language="java" contentType="text/html; charset=GB18030"
    pageEncoding="GB18030"%>
    <%@ taglib prefix="s" uri="/struts-tags"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=GB18030">
<title>股票信息</title>
</head>
<body>
<table border="1">
<tr>
<td>ID</td>
<td>名字</td>
<td>成交价</td>
<td>涨跌值</td>
<td>涨跌幅</td>
<td>成交量</td>
<td>成交额</td>
</tr>
<tr>
<td><s:property value="stockId"/>
</td>
<td><s:property value="name"/>
</td>
<td><s:property value="dvalence"/>
</td>
<td><s:property value="gdvalue"/>
</td>
<td><s:property value="gdrange"/>
</td>
</tr>
</table>
</body></html>
execute方法末尾，只是把值赋给了变量，并未传递到JSP页面。
String name = strs[0];//股票名称
这是新定义了一个变量，并不是你最上面定义的用来传递的变量。
应该写成
name = strs[0];//股票名称
下面的几个赋值语句也是如此。
String name = strs[0];//股票名称
String stockId = "600058";
String dvalence = strs[1];  //成交价
String gdvalue = strs[2];  //跌涨值
String gdrange = strs[3];   //跌涨幅这几个的赋值有问题，你是新定义的变量
去掉String应该就可以了
           String name = strs[0];//股票名称
            String stockId = "600058";
           String dvalence = strs[1];  //成交价
            String gdvalue = strs[2];  //跌涨值
            String gdrange = strs[3];   //跌涨幅
这些在类里面定义了的，不需要再定义了，不然类里定义的属性不会被赋值
name = strs[0];//股票名称
stockId = "600058";
dvalence = strs[1];  //成交价
gdvalue = strs[2];  //跌涨值
gdrange = strs[3];   //跌涨幅
支持下，是使用ajax+jquery接收Buffered返回的值嘛？
局部变量和action中属性的赋值问题。去掉下面的String标记
execute() 方法执行完后得到的数据你没有放到jsp页面，所以jsp是不会有结果数据的
那意思就是ACTION能调到页面，值得不到..你把action里面的东西新建一个实体类
String name = strs[0];//股票名称
String stockId = "600058";
String dvalence = strs[1]; //成交价
String gdvalue = strs[2]; //跌涨值
String gdrange = strs[3]; //跌涨幅去String