jsp中获取Servlet读取的图片

需求：

通过servlet读取图片地址，然后显示在jsp页面上

jsp页面：

 <img style="width:240px; height:200px;" src="<%=request.getContextPath()%>/chartServlet"> 

wel.xml 配置：

<servlet>
        <servlet-name>chartServlet</servlet-name>
        <servlet-class>com.stronginfo.transenly.website.servlet.chartServlet</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>chartServlet</servlet-name>
        <url-pattern>/chartServlet</url-pattern>
    </servlet-mapping>

java代码：

package com.stronginfo.transenly.website.servlet;

import java.io.FileInputStream;
import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.stronginfo.core.dao.OrderDao;
import com.stronginfo.transenly.util.ConfigManager;

public class chartServlet extends HttpServlet
{

    private static final long serialVersionUID = 1L;

   
    

    public void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException
    {

    
        ServletOutputStream outStream = res.getOutputStream();// 得到向客户端输出二进制数据的对象
        FileInputStream fis = new FileInputStream(图片路径); // 以byte流的方式打开文件
        // 读数据
        byte data[] = new byte[1000];
        while (fis.read(data) > 0)
        {
            outStream.write(data);
        }
        fis.close();
        res.setContentType("image/*"); // 设置返回的文件类型
        outStream.write(data); // 输出数据

        outStream.close();

    }

}