java中Runtime，Process的一些有趣用法(二) - 获取主机中安装的软件相关信息

谁践踏了优雅 2022-12-28 06:13 78阅读 0赞

import java.io.BufferedReader;
    import java.io.IOException;
    import java.io.InputStreamReader;
    import java.io.UnsupportedEncodingException;
    import java.util.ArrayList;
    import java.util.List;
    
    
    public class Test2 {
        public static void main(String[] args) throws Exception {
            Test2 t=new Test2();
            List< String[] > info=t.getPcInfo();
            System.out.println("软件名称\t版本号\t出版商\t卸载路径");
            for(  String[] ss:info){
                if(  ss!=null ) {
                    for (String s : ss) {
                        System.out.print(s + "\t");
                    }
                    System.out.println();
                }
            }
    
        }
    
        private  List< String[] >  getPcInfo() throws Exception {
            List< String[] > info=new ArrayList<String[]>();
            Runtime runtime = Runtime.getRuntime();
            Process process = null;
            process = runtime
                    .exec("cmd /c reg query HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\");
            BufferedReader in = new BufferedReader(new InputStreamReader(process
                    .getInputStream(),"GBK"));
            String string = null;
            while ((string = in.readLine()) != null) {
                process = runtime.exec("cmd /c reg query " + string
                        + " /v DisplayName");
                BufferedReader name = new BufferedReader(new InputStreamReader(
                        process.getInputStream(),"GBK"));
                String[] message = queryValue(string);
                info.add(    message );
            }
            in.close();
            process.destroy();
            return  info;
        }
    
        //具体查询每一个软件的详细信息
        private String[] queryValue(String string) throws IOException {
            String nameString = "";     //软件名
            String versionString = "";     //版本
    
            String publisherString="";       //开发商
            String uninstallPathString = "";   //卸载路径
    
            Runtime runtime = Runtime.getRuntime();
            Process process = null;
            BufferedReader br = null;
    
            process = runtime.exec("cmd /c reg query " + string + " /v DisplayName");
            br = new BufferedReader(new InputStreamReader(process
                    .getInputStream(),"GBK"));
            br.readLine();br.readLine();//去掉前两行无用信息
            if((nameString=br.readLine())!=null){
                nameString=nameString.replaceAll("DisplayName    REG_SZ    ", "");	//去掉无用信息
            }
    
    
            process = runtime.exec("cmd /c reg query " + string + " /v DisplayVersion");
            br = new BufferedReader(new InputStreamReader(process
                    .getInputStream(),"GBK"));
            br.readLine();br.readLine();//去掉前两行无用信息
            if((versionString=br.readLine())!=null){
                versionString=versionString.replaceAll("DisplayVersion    REG_SZ    ", "");	//去掉无用信息
            }
    
            process = runtime.exec("cmd /c reg query " + string + " /v Publisher");
            br = new BufferedReader(new InputStreamReader(process
                    .getInputStream(),"GBK"));
            br.readLine();br.readLine();//去掉前两行无用信息
            if((publisherString=br.readLine())!=null){
                publisherString =publisherString.replaceAll("Publisher    REG_SZ    ", "");	//去掉无用信息
            }
    
            process = runtime.exec("cmd /c reg query " + string + " /v UninstallString");
            br = new BufferedReader(new InputStreamReader(process
                    .getInputStream(),"GBK"));
            br.readLine();br.readLine();//去掉前两行无用信息
            if((uninstallPathString=br.readLine())!=null){
                uninstallPathString=uninstallPathString.replaceAll("UninstallString    REG_SZ    ", "");	//去掉无用信息
            }
    
            String[] resultString=new String[4];
            resultString[0]= nameString ;//== null ? null : new String(nameString.getBytes(),"GB-2312");
            resultString[1]= versionString ;//== null ? null : new String(versionString.getBytes(),"GB-2312");
            resultString[2]= publisherString ;//== null ? null : new String(publisherString.getBytes(),"GB-2312");
            resultString[3]= uninstallPathString ;//== null ? null : new String(uninstallPathString.getBytes(),"GB-2312");
            if(resultString[0]==null) resultString=null;	//没有名字的不显示
            return resultString;
        }
    
    }

运行结果:

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3poYW5neWluZ2NoZW5ncWk_size_16_color_FFFFFF_t_70][]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3poYW5neWluZ2NoZW5ncWk_size_16_color_FFFFFF_t_70]: /images/20221120/abca8424de014841a5deba976281e5b7.png