系统变量中设定文件路径

这是一个小例子,经过测试过的。

package com.surekam.mpm.casemanagement.web.test;

import java.io.File;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.OutputStream;

public class PropertyTest {

public static void main(String[] args) throws IOException {

System.setProperty("java.io.tmpdir", "d:\\test\\test");

System.out.println(System.getProperty("java.io.tmpdir"));

String filePath = System.getProperty("java.io.tmpdir");

File file = new File(filePath);

System.out.println(file.exists());

if(!file.exists()){

file.mkdirs();

}

file = null;

file = new File(filePath+"\\test.txt");

System.out.println(file.toURI().toASCIIString()+"  "+file.toURL().toString());

try {

OutputStream output = new FileOutputStream(file);

output.write("我是一个中国人。".getBytes());

output.flush();

output.close();

} catch (FileNotFoundException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

}