访问jar包内部资源文件的方法

如果在jar中需要访问jar包内部的某个资源文件，可以用class.getResourceAsStream（文件路径）获取文件内容。

假设文件路径是project/src/com/zh/resource, code如下：

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;public class test {
public static void main(String[] args) {
StringBuffer fileStrBuffer = loadFile("/com/zh/resource/test.txt");
if(fileStrBuffer!=null) {
System.out.print(fileStrBuffer);
}
}

/**
* Load the specified  file.
*
* @return The buffer to store file content.
*/
private static StringBuffer loadFile(String file) {
StringBuffer buffer = new StringBuffer();
InputStream is = test.class.getResourceAsStream(file);
BufferedReader reader;
try {
reader = new BufferedReader(new InputStreamReader(is, "utf-8"));
String tempString = null;
while ((tempString = reader.readLine()) != null) {
buffer.append(tempString);
}
} catch (UnsupportedEncodingException e) {
buffer = null;
} catch (IOException e) {
buffer = null;
} finally {
try {
is.close();
} catch (IOException e) {
}
}

return buffer;
}
}

结果：

xxxxx{0}xxxxx{1}xxxxxxxx{2}xxxxxx