用JavaBean实现文件上载(二)上载文件
2008-01-05 20:18:21 来源:WEB开发网核心提示:上载文件众所周知,javaBean是Java平台的软件组件,用JavaBean实现文件上载(二)上载文件,下面要实现的上载功能就是用JavaBean实现,所以它可以方便地应用到任何需要文件上载功能的应用之中
上载文件
众所周知,javaBean是Java平台的软件组件,下面要实现的上载功能就是用JavaBean实现,所以它可以方便地应用到任何需要文件上载功能的应用之中。
代码清单如下:
package com.brainysoftware.web;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.ServletInputStream;
import java.util.Dictionary;
import java.util.Hashtable;
import java.io.PRintWriter;
import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;
public class FileUploadBean {
private String savePath, filepath, filename, contentType;
private Dictionary fields;
public String getFilename() {
return filename;
}
public String getFilepath() {
return filepath;
}
public void setSavePath(String savePath) {
this.savePath = savePath;
}
public String getContentType() {
return contentType;
}
public String getFieldValue(String fieldName) {
if (fields == null fieldName == null)
return null;
return (String) fields.get(fieldName);
}
private void setFilename(String s) {
if (s==null)
return;
int pos = s.indexOf("filename=\"");
if (pos != -1) {
filepath = s.substring(pos+10, s.length()-1);
// Windows浏览器发送完整的文件路径和名字
// 但linux/Unix和Mac浏览器只发送文件名字
pos = filepath.lastIndexOf("\\");
if (pos != -1)
filename = filepath.substring(pos + 1);
else
filename = filepath;
}
}
private void setContentType(String s) {
if (s==null)
return;
int pos = s.indexOf(": ");
if (pos != -1)
contentType = s.substring(pos+2, s.length());
}
public void doUpload(HttpServletRequest request) throws IOException {
ServletInputStream in = request.getInputStream();
byte[] line = new byte[128];
int i = in.readLine(line, 0, 128);
if (i < 3)
return;
int boundaryLength = i - 2;
String boundary = new String(line, 0, boundaryLength); //-2丢弃换行字符
fields = new Hashtable();
while (i != -1) {
String newLine = new String(line, 0, i);
众所周知,javaBean是Java平台的软件组件,下面要实现的上载功能就是用JavaBean实现,所以它可以方便地应用到任何需要文件上载功能的应用之中。
代码清单如下:
package com.brainysoftware.web;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.ServletInputStream;
import java.util.Dictionary;
import java.util.Hashtable;
import java.io.PRintWriter;
import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;
public class FileUploadBean {
private String savePath, filepath, filename, contentType;
private Dictionary fields;
public String getFilename() {
return filename;
}
public String getFilepath() {
return filepath;
}
public void setSavePath(String savePath) {
this.savePath = savePath;
}
public String getContentType() {
return contentType;
}
public String getFieldValue(String fieldName) {
if (fields == null fieldName == null)
return null;
return (String) fields.get(fieldName);
}
private void setFilename(String s) {
if (s==null)
return;
int pos = s.indexOf("filename=\"");
if (pos != -1) {
filepath = s.substring(pos+10, s.length()-1);
// Windows浏览器发送完整的文件路径和名字
// 但linux/Unix和Mac浏览器只发送文件名字
pos = filepath.lastIndexOf("\\");
if (pos != -1)
filename = filepath.substring(pos + 1);
else
filename = filepath;
}
}
private void setContentType(String s) {
if (s==null)
return;
int pos = s.indexOf(": ");
if (pos != -1)
contentType = s.substring(pos+2, s.length());
}
public void doUpload(HttpServletRequest request) throws IOException {
ServletInputStream in = request.getInputStream();
byte[] line = new byte[128];
int i = in.readLine(line, 0, 128);
if (i < 3)
return;
int boundaryLength = i - 2;
String boundary = new String(line, 0, boundaryLength); //-2丢弃换行字符
fields = new Hashtable();
while (i != -1) {
String newLine = new String(line, 0, i);
[]
更多精彩
赞助商链接