java中,1.要求传入一个文件a.txt的路径,读取该文件的内容,并将其中敏感词汇替换为*,替换完成后将内容输出到b.txt中
时间: 2023-11-28 15:48:45 浏览: 40
可以使用Java的IO流来实现读写文件和敏感词汇替换的功能。具体步骤如下:
1. 构建敏感词汇列表
首先,需要将所有敏感词汇保存在一个列表中,可以使用数组或者集合。以数组为例,代码如下:
```java
String[] sensitiveWords = {"敏感词1", "敏感词2", "敏感词3"};
```
2. 读取文件内容并替换敏感词汇
使用Java的File类和BufferedReader类来读取文件内容,并使用字符串的replaceAll方法来替换敏感词汇。代码如下:
```java
File file = new File("a.txt");
BufferedReader reader = new BufferedReader(new FileReader(file));
String line = null;
StringBuilder sb = new StringBuilder();
while ((line = reader.readLine()) != null) {
for (String word : sensitiveWords) {
line = line.replaceAll(word, "*");
}
sb.append(line).append("\n");
}
reader.close();
String content = sb.toString();
```
3. 将替换后的内容写入文件
使用Java的File类和BufferedWriter类来将替换后的内容写入到文件中。代码如下:
```java
File outFile = new File("b.txt");
BufferedWriter writer = new BufferedWriter(new FileWriter(outFile));
writer.write(content);
writer.close();
```
完整代码如下:
```java
import java.io.*;
public class SensitiveWordsReplace {
public static void main(String[] args) throws IOException {
String[] sensitiveWords = {"敏感词1", "敏感词2", "敏感词3"};
File file = new File("a.txt");
BufferedReader reader = new BufferedReader(new FileReader(file));
String line = null;
StringBuilder sb = new StringBuilder();
while ((line = reader.readLine()) != null) {
for (String word : sensitiveWords) {
line = line.replaceAll(word, "*");
}
sb.append(line).append("\n");
}
reader.close();
String content = sb.toString();
File outFile = new File("b.txt");
BufferedWriter writer = new BufferedWriter(new FileWriter(outFile));
writer.write(content);
writer.close();
}
}
```
相关推荐
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)