文件读写以及ftp上传下载
2016-01-19 17:47
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<span style="font-family: Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255);">最近在文件读写方面用的比较多，也学到了不少东西。以前对文件读写比较陌生，一直感觉很难，实际接触之后，使用起来其实并不难下面提供我的几个工具类</span>
<span style="font-family:Arial, Helvetica, sans-serif;"><span style="background-color: rgb(255, 255, 255);">文件的读、写</span></span>
<span style="font-family: Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255);"></span><pre name="code" class="html">package xxx
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.util.ArrayList;
import java.util.List;
import com.ultrapower.project.web.bean.agent_conf;
public class FileRead {
/**
* 一行一行读取文件，适合字符读取，若读取中文字符时会出现乱码
*
* 流的关闭顺序：先打开的后关，后打开的先关，
* 否则有可能出现java.io.IOException: Stream closed异常
*
* @throws IOException
*/
public void readFile01() throws IOException {
FileReader fr=new FileReader("E:/phsftp/evdokey/evdokey_201103221556.txt");
BufferedReader br=new BufferedReader(fr);
String line="";
//String[] arrs=null;
while ((line=br.readLine())!=null) {
//arrs=line.split(",");
//System.out.println(arrs[0] + " : " + arrs[1] + " : " + arrs[2]);
System.out.println(line);
}
br.close();
fr.close();
}
/**
* 一行一行读取文件，解决读取中文字符时出现乱码
*
* 流的关闭顺序：先打开的后关，后打开的先关，
* 否则有可能出现java.io.IOException: Stream closed异常
*
* @throws IOException
*/
public List<agent_conf> readFile02(String agentName) throws IOException {
//FileInputStream fis=new FileInputStream("E:/phsftp/evdokey/evdokey_201103221556.txt");
FileInputStream fis=new FileInputStream(new File("d:/"+agentName+"/conf/client.txt"));
InputStreamReader isr=new InputStreamReader(fis, "UTF-8");
BufferedReader br = new BufferedReader(isr);
//简写如下
//BufferedReader br = new BufferedReader(new InputStreamReader(
// new FileInputStream("E:/phsftp/evdokey/evdokey_201103221556.txt"), "UTF-8"));
String line="";
List<agent_conf> conf=new ArrayList<agent_conf>();
while ((line=br.readLine())!=null) {
agent_conf c=new agent_conf();
c.setKey(line);
conf.add(c);
// System.out.println(line);
}
br.close();
isr.close();
fis.close();
return conf;
}
/**
* 一行一行写入文件，适合字符写入，若写入中文字符时会出现乱码
*
* 流的关闭顺序：先打开的后关，后打开的先关，
* 否则有可能出现java.io.IOException: Stream closed异常
*
* @throws IOException
*/
public void writeFile01(String agentName) throws IOException {
String[] arrs={
"zhangsan,23,FuJian",
"lisi,30,ShangHai",
"wangwu,43,BeiJing",
"laolin,21,ChongQing",
"ximenqing,67,GuiZhou"
};
FileWriter fw=new FileWriter(new File("d:/"+agentName+"/conf/client.txt"));
//写入中文字符时会出现乱码
BufferedWriter bw=new BufferedWriter(fw);
//BufferedWriter bw=new BufferedWriter(new BufferedWriter(new OutputStreamWriter(new FileOutputStream(new File("E:/phsftp/evdokey/evdokey_201103221556.txt")), "UTF-8")));
for(String arr:arrs){
bw.write(arr+"\t\n");
}
bw.close();
fw.close();
}
/**
* 一行一行写入文件，解决写入中文字符时出现乱码
*
* 流的关闭顺序：先打开的后关，后打开的先关，
* 否则有可能出现java.io.IOException: Stream closed异常
*
* @throws IOException
*/
public void writeFile02(String datas,String agentName) throws IOException {
//写入中文字符时解决中文乱码问题
FileOutputStream fos=new FileOutputStream(new File("d:/"+agentName+"/conf/client.txt"));
OutputStreamWriter osw=new OutputStreamWriter(fos, "UTF-8");
BufferedWriter bw=new BufferedWriter(osw);
bw.write(datas);
//注意关闭的先后顺序，先打开的后关闭，后打开的先关闭
bw.close();
osw.close();
fos.close();
}
public static void main(String[] args) throws IOException {
FileRead fr=new FileRead();
// fr.readFile02("apache-flume-10.2");
String datas="sssasd";
fr.writeFile02(datas, "apache-flume-10.2");
}
}<span style="font-family: Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255);"> </span>文件的上传、下载 我用的是ftp进行对端的上传下载 具体东西自己修改下 就可以使用了
<span style="font-family:Arial, Helvetica, sans-serif;"><span style="background-color: rgb(255, 255, 255);">依赖包 ：</span></span><pre name="code" class="html"><span style="font-family: Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255);"> commons-net-1.4.1.jar PFTClinet.jar</span>
<span style="font-family: Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255);"> </span>
<span style="font-family: Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255);">package x'x'x;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import org.apache.commons.io.IOUtils;
import org.apache.commons.net.ftp.FTPClient;
/**
* JAVA FTP上传下载 助手类
*
* commons-net-1.4.1.jar PFTClinet.jar
*
* @author : zs
*/
public class FtpManage {
<span style="white-space:pre"> </span>/**
<span style="white-space:pre"> </span> * FTP上传单个文件测试
<span style="white-space:pre"> </span> */
<span style="white-space:pre"> </span>public static void fileUploadByFtp(String agentName) {
<span style="white-space:pre"> </span>FTPClient ftpClient = n
bdc0
ew FTPClient();
<span style="white-space:pre"> </span>FileInputStream fis = null;
<span style="white-space:pre"> </span>try {
<span style="white-space:pre"> </span>ftpClient.connect("192.168.0.114");
<span style="white-space:pre"> </span>ftpClient.login("wang", "wang");
<span style="white-space:pre"> </span>File srcFile = new File("d:/"+agentName+"/conf/client.txt");
<span style="white-space:pre"> </span>fis = new FileInputStream(srcFile);
<span style="white-space:pre"> </span>// 设置上传目录
<span style="white-space:pre"> </span>ftpClient.changeWorkingDirectory("/agent/"+agentName+"/conf");
<span style="white-space:pre"> </span>ftpClient.setBufferSize(1024);
<span style="white-space:pre"> </span>ftpClient.setControlEncoding("GBK");
<span style="white-space:pre"> </span>// 设置文件类型（二进制）
<span style="white-space:pre"> </span>ftpClient.setFileType(FTPClient.BINARY_FILE_TYPE);
<span style="white-space:pre"> </span>//设置上传文件名
<span style="white-space:pre"> </span>ftpClient.storeFile("client.conf", fis);
<span style="white-space:pre"> </span>//如果上传成功则清空当前本地文件夹
//<span style="white-space:pre"> </span>File dFile=new File("d:/"+agentName+"/conf");
//<span style="white-space:pre"> </span>srcFile.delete();
<span style="white-space:pre"> </span>} catch (IOException e) {
<span style="white-space:pre"> </span>e.printStackTrace();
<span style="white-space:pre"> </span>throw new RuntimeException("FTP客户端出错！", e);
<span style="white-space:pre"> </span>} finally {
<span style="white-space:pre"> </span>IOUtils.closeQuietly(fis);
<span style="white-space:pre"> </span>try {
<span style="white-space:pre"> </span>ftpClient.disconnect();
<span style="white-space:pre"> </span>} catch (IOException e) {
<span style="white-space:pre"> </span>e.printStackTrace();
<span style="white-space:pre"> </span>throw new RuntimeException("关闭FTP连接发生异常！", e);
<span style="white-space:pre"> </span>}
<span style="white-space:pre"> </span>}
<span style="white-space:pre"> </span>}
<span style="white-space:pre"> </span>/**
<span style="white-space:pre"> </span> * FTP下载单个文件测试
<span style="white-space:pre"> </span> */
<span style="white-space:pre"> </span>public static void fileDownloadByFtp(String agentName) {
<span style="white-space:pre"> </span>FTPClient ftpClient = new FTPClient();
<span style="white-space:pre"> </span>FileOutputStream fos = null;
<span style="white-space:pre"> </span>try {
<span style="white-space:pre"> </span>ftpClient.connect("192.168.0.114");
<span style="white-space:pre"> </span>ftpClient.login("wang", "wang");
<span style="white-space:pre"> </span>//linux目录
<span style="white-space:pre"> </span>String remoteFileName = "/agent/"+agentName+"/conf/client.conf";
<span style="white-space:pre"> </span>// fos = new FileOutputStream("E:/test/test_back_081901.sql");
<span style="white-space:pre"> </span>//之后要进行字符串的替换 agent名
<span style="white-space:pre"> </span>//将文件下载好的文件流写到本地d盘下
<span style="white-space:pre"> </span>String downPath="d:/"+agentName+"/conf/client.txt";
<span style="white-space:pre"> </span>//判断文件路径是否存在，不存在则创建
<span style="white-space:pre"> </span>File path1 = new File("d:/"+agentName+"/conf");
<span style="white-space:pre"> </span>if (!path1.exists()) {
<span style="white-space:pre"> </span>path1.mkdirs();
<span style="white-space:pre"> </span>}
<span style="white-space:pre"> </span>fos = new FileOutputStream(downPath);
<span style="white-space:pre"> </span>
<span style="white-space:pre"> </span>ftpClient.setBufferSize(1024);
<span style="white-space:pre"> </span>// 设置文件类型（二进制）
<span style="white-space:pre"> </span>ftpClient.setFileType(FTPClient.BINARY_FILE_TYPE);
<span style="white-space:pre"> </span>ftpClient.retrieveFile(remoteFileName, fos);
<span style="white-space:pre"> </span>} catch (IOException e) {
<span style="white-space:pre"> </span>e.printStackTrace();
<span style="white-space:pre"> </span>throw new RuntimeException("FTP客户端出错！", e);
<span style="white-space:pre"> </span>} finally {
<span style="white-space:pre"> </span>IOUtils.closeQuietly(fos);
<span style="white-space:pre"> </span>try {
<span style="white-space:pre"> </span>ftpClient.disconnect();
<span style="white-space:pre"> </span>} catch (IOException e) {
<span style="white-space:pre"> </span>e.printStackTrace();
<span style="white-space:pre"> </span>throw new RuntimeException("关闭FTP连接发生异常！", e);
<span style="white-space:pre"> </span>}
<span style="white-space:pre"> </span>}
<span style="white-space:pre"> </span>}
<span style="white-space:pre"> </span>public static void main(String[] args){
<span style="white-space:pre"> </span>fileUploadByFtp("apache-flume-10.2");
//<span style="white-space:pre"> </span>fileDownloadByFtp("apache-flume-10.2");
<span style="white-space:pre"> </span>System.out.println("成功！");
<span style="white-space:pre"> </span>}
}
</span>
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