我要实现文件的上传功能,下面是我的代码:
UploadServlet3.java
import java.io.IOException;
import java.io.InputStream;import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;public class UploadServlet3 extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
InputStream in = request.getInputStream();
int len = 0;
byte buffer[] = new byte[1024];
System.out.println("123456789");
int which;
while ((which = in.read()) > -1){
System.out.println("1234888888");
System.out.println(new String(buffer));
}
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
}}
下面是upload.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>My JSP 'upload.jsp' starting page</title>
</head>
<body>
<!-- 要切记,表单中包含上传输入项的话,表单的类型必须设置为multipart/form-data -->
<form action="${pageContext.request.contextPath }/servlet/UploadServlet3" method="get" enctype="multipart/form-data">
用户名:<input type="text" name="username"><br/>
上传文件1:<input type="file" name="filename1"><br/>
上传文件2:<input type="file" name="filename2"><br/>
<input type="submit" value="上传">
</form>
</body>
</html>这个代码实现了上传的表单也能添加文件了,但是呢,就是执行不到while ((which = in.read()) > -1){
System.out.println("1234888888");
System.out.println(new String(buffer));
}
这段代码,我的qq578672650
UploadServlet3.java
import java.io.IOException;
import java.io.InputStream;import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;public class UploadServlet3 extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
InputStream in = request.getInputStream();
int len = 0;
byte buffer[] = new byte[1024];
System.out.println("123456789");
int which;
while ((which = in.read()) > -1){
System.out.println("1234888888");
System.out.println(new String(buffer));
}
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
}}
下面是upload.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>My JSP 'upload.jsp' starting page</title>
</head>
<body>
<!-- 要切记,表单中包含上传输入项的话,表单的类型必须设置为multipart/form-data -->
<form action="${pageContext.request.contextPath }/servlet/UploadServlet3" method="get" enctype="multipart/form-data">
用户名:<input type="text" name="username"><br/>
上传文件1:<input type="file" name="filename1"><br/>
上传文件2:<input type="file" name="filename2"><br/>
<input type="submit" value="上传">
</form>
</body>
</html>这个代码实现了上传的表单也能添加文件了,但是呢,就是执行不到while ((which = in.read()) > -1){
System.out.println("1234888888");
System.out.println(new String(buffer));
}
这段代码,我的qq578672650
解决方案 »
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try {
InputStreamReader isr = request.getInputStream();
BufferedReader br = new BufferedReader(isr);
StringBuffer sb = new StringBuffer();
String line = br.readLine();
while (line != null) {
sb.append(line);
line = br.readLine();
}
br.close();
return sb.toString();
} catch (IOException e) {
e.printStackTrace();
return null;
}
[/code]
这样试试
try {
InputStreamReader isr = request.getInputStream();
BufferedReader br = new BufferedReader(isr);
StringBuffer sb = new StringBuffer();
String line = br.readLine();
while (line != null) {
sb.append(line);
line = br.readLine();
}
br.close();
return sb.toString();
} catch (IOException e) {
e.printStackTrace();
return null;
}
[/code]
这样试试朋友给你看两个成熟一点的上传文件源码http://wenku.baidu.com/view/b262f607e87101f69e319522.htmlhttp://wenku.baidu.com/view/50ccaf7302768e9951e738c7.html希望对你有帮助