showimage_yld.java
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package com.servlet.bkyld;
import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class showimage_yld extends HttpServlet {
/**
*
*/
private static final long serialVersionUID = -3283409093702318948L;
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doPost(request, response);
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
request.setCharacterEncoding("utf-8");
response.setCharacterEncoding("utf-8");
response.setContentType("text/html");
String dir = this.getServletContext().getRealPath("/");
String filepath = dir + "bkyldimag";
String re = "{root:[";
File file = new File(filepath);// 获得这个文件的对象
if (!file.exists())
file.mkdir();
for (int i = 0; i < file.list().length; i++) {
String name = file.list()[i];
if (i == 0)
re += "{filename:'" + name + "'}";
else
re += ",{filename:'" + name + "'}";
}
PrintWriter out = response.getWriter();
out.write(re + "]}");
out.close();
}
}