java指定路径写、读文件

package com.util;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;

/**
* @ClassName: IOUtill
* @Description: I/O工具类
* @author 无名
* @date 2016-5-20 下午9:00:18
* @version 1.0
*/
public final class IOUtill
{
private IOUtill(){}

public static void writeByUrl(String url,String content)
{
File file = new File(url);
if (!file.getParentFile().exists())
{
file.getParentFile().mkdirs();
}
try
{
file.createNewFile();
} catch (IOException e) {
e.printStackTrace();
}
try {
FileWriter fw = new FileWriter(file, true);
BufferedWriter bw = new BufferedWriter(fw);
bw.write(content);
bw.flush();
bw.close();
fw.close();
} catch (IOException e) {
e.printStackTrace();
}
}

public static String readByUrl(String url)
{
File file = new File(url);
if (!file.getParentFile().exists())
{
file.getParentFile().mkdirs();
}
String content = "";
try
{
FileReader fr = new FileReader(file);
BufferedReader br = new BufferedReader(fr);
try
{
String line = br.readLine();
content += line;
while(line != null)
{
line = br.readLine();
content += line;
}
}catch (IOException ex) {
ex.printStackTrace();
}
}catch(FileNotFoundException e){
e.printStackTrace();
}
return content;
}
}