[转]java将字符串写入文件中

Java代码  

1. import java.io.File;  
2. import java.io.FileNotFoundException;  
3. import java.io.FileOutputStream;  
4. import java.io.FileWriter;  
5. import java.io.IOException;  
6. import java.io.PrintStream;  
7. import java.io.PrintWriter;  
8. import java.io.RandomAccessFile;  
9.   
10. public class WriteStringToTxt {  
11.   
12.     public void WriteStringToFile(String filePath) {  
13.         try {  
14.             File file = new File(filePath);  
15.             PrintStream ps = new PrintStream(new FileOutputStream(file));  
16.             ps.println("http://www.docin.com/p-315288370.html");// 往文件里写入字符串  
17.             ps.append("http://www.docin.com/p-315288370.html");// 在已有的基础上添加字符串  
18.         } catch (FileNotFoundException e) {  
19.             // TODO Auto-generated catch block  
20.             e.printStackTrace();  
21.         }  
22.     }  
23.   
24.     public void WriteStringToFile2(String filePath) {  
25.         try {  
26.             FileWriter fw = new FileWriter(filePath, true);  
27.             BufferedWriter bw = new BufferedWriter(fw);  
28.             bw.append("在已有的基础上添加字符串");  
29.             bw.write("abc\r\n ");// 往已有的文件上添加字符串  
30.             bw.write("def\r\n ");  
31.             bw.write("hijk ");  
32.             bw.close();  
33.             fw.close();  
34.         } catch (Exception e) {  
35.             // TODO Auto-generated catch block  
36.             e.printStackTrace();  
37.         }  
38.     }  
39.   
40.     public void WriteStringToFile3(String filePath) {  
41.         try {  
42.             PrintWriter pw = new PrintWriter(new FileWriter(filePath));  
43.             pw.println("abc ");  
44.             pw.println("def ");  
45.             pw.println("hef ");  
46.             pw.close();  
47.         } catch (IOException e) {  
48.             // TODO Auto-generated catch block  
49.             e.printStackTrace();  
50.         }  
51.     }  
52.   
53.     public void WriteStringToFile4(String filePath) {  
54.         try {  
55.             RandomAccessFile rf = new RandomAccessFile(filePath, "rw");  
56.             rf.writeBytes("op\r\n");  
57.             rf.writeBytes("app\r\n");  
58.             rf.writeBytes("hijklllll");  
59.             rf.close();  
60.         } catch (IOException e) {  
61.             e.printStackTrace();  
62.         }  
63.     }  
64.   
65.     public void WriteStringToFile5(String filePath) {  
66.         try {  
67.             FileOutputStream fos = new FileOutputStream(filePath);  
68.             String s = "http://www.docin.com/p-315288370.html";  
69.             fos.write(s.getBytes());  
70.             fos.close();  
71.         } catch (Exception e) {  
72.             // TODO Auto-generated catch block  
73.             e.printStackTrace();  
74.         }  
75.     }  
76.   
77.     public static void main(String[] args) {  
78.         String filePath = "E:\\link.txt";  
79.         // new WriteStringToTxt().WriteStringToFile(filePath);  
80.         // new WriteStringToTxt().WriteStringToFile2(filePath);  
81.         // new WriteStringToTxt().WriteStringToFile3(filePath);  
82.         // new WriteStringToTxt().WriteStringToFile4(filePath);  
83.         new WriteStringToTxt().WriteStringToFile5(filePath);  
84.     }  
85. }
    

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