#! /bin/bash
rurl=/data/crm/tomcat/webapps/ROOT/upload/
su - gpguser -c "gpg --recipient XXX --output $rurl$1 --encrypt $rurl$2"
if [  -f "$rurl$1" ]; then
  echo "$1"
fi</span>

因gpg加密工具是gpguser安裝的，所有用java 呼叫shell指令碼時執行gpg命令會報找不到金鑰檔案的錯誤。

可以利用”su - 使用者 -c“ 來指定使用者執行。

呼叫shell 的java 程式碼：

/**
<span style="font-family:KaiTi_GB2312;">	 * gpg加密
	 * @return
	 */
	private boolean encrypt(String outputname,String inputname){
		String line = null;
		Process process = null;  
		try {  
			String[] cmd = {"/bin/bash", "-c", "/data/crm/tomcat/shell/gpgEncryptFile "+outputname+" "+inputname};  
			process = Runtime.getRuntime().exec(cmd);
                int exitValue = process.waitFor();  
	        if (0 != exitValue) {  
	            logger.info("call shell failed. error code is :" + exitValue);  
	            return false;
	        }  
	        logger.error("call shell  code is :" + exitValue);  
            BufferedReader input = new BufferedReader(new InputStreamReader(process.getInputStream()));  
            boolean b=false;
            while ((line = input.readLine()) != null) {  
            	if(line.equals(outputname)){
                	b= true;
                }
            }  
            input.close();  
            return b;
        } catch (IOException e) {  
            e.printStackTrace();  
        } catch (Throwable e) {  
	    	logger.error("call shell failed. " + e);  
	    }  
		return false;
	}</span>