代码描述
用java对windows注册表进行编辑是一个比较困难的任务，因为java的平台无关性。但是java提供了Runtime类，它允许把原始的command命令直接发生送给OS，所以可以通过这个类来实现对注册表简单有效的管理。
这里允许的基本功能是添加、删除和查询注册表信息。根据key查询出value和type分别存放在不同的变量中。
//主要的方法
add(String location, String key, String type, String value);
delete(String location, String key);
query(String location, String key);
//查询消息用到的方法
getKey() => 检索的key名.
getValue() => 根据key得到的value
getType() => 根据key得到的数据类型 (REG_SZ, REG_BINARY, 等)
调用方法
例：
| public static void main(String[] args) { try { RegKeyManager rkm = new RegKeyManager(); // 64位系统的注册表目录 // rkm.query("HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Tencent\\QQ2009", "Install"); // 32位系统的注册表目录 rkm.query("HKEY_LOCAL_MACHINE\\SOFTWARE\\Tencent\\QQ2009", "Install"); System.out.println("KEY: " + rkm.getKey() + " DATA TYPE: " + rkm.getType() + " DATA VALUE: " + rkm.getValue()); // rkm.add("HKEY_LOCAL_MACHINE\\SOFTWARE\\Tencent\\QQ2009","TESTING","REG_SZ","VALUE DATA"); // rkm.delete("HKEY_LOCAL_MACHINE\\SOFTWARE\\Tencent\\QQ2009","TESTING"); } catch (Exception e) { e.printStackTrace(); } } |
注：64位系统注册表路径是不同的上面的代码实现了在qq的注册表路径下查询出qq的安装路径（对于获取QQ的安装路径前段时间写过一篇类似的文章，如果你感兴趣的话可以参看JAVA通过注册表获取软件的安装路径），在安装路径下添加一个注册表信息，然后删除添加的信息。
| package info.itlanguageexpress.java; import java.io.*; public class RegKeyManager { private final String TYPES[] = { "SZ", "BINARY", "DWORD", "QWORD", "DWORD_LITTLE_ENDIAN", "QWORD_LITTLE_ENDIAN", "DWORD_BIG_ENDIAN", "EXPAND_SZ", "LINK", "MULTI_SZ", "NONE", "RESOURCE_LIST" }; private String type = "", value = "", key = ""; protected void query(String loc, String k) throws Exception { Process p = Runtime.getRuntime().exec("reg QUERY \"" + loc + "\" /v \"" + k + "\""); BufferedReader in = new BufferedReader( new InputStreamReader( p.getInputStream() ) ); String out = ""; while ( ( out = in.readLine() ) != null ) { if (out.matches("(.*)\\s+REG_(.*)")) { break; } } in.close(); String str[] = out.split(" "); int b = 0; for (int a=0; a < str.length; a++) { if ( str[a].replace(" ", "").matches("\\S+") ) { switch (b) { case 0: key = str[a]; break; case 1: type = str[a]; break; case 2: value = str[a]; break; } b++; } } } protected String getKey() { return key; } protected String getType() { return type; } protected String getValue() { return value; } protected boolean add(String loc, String name, String dType, String value) throws Exception { boolean comp = false, valid = false; for (int a = 0; a < TYPES.length; a++) { if (dType.equalsIgnoreCase("REG_" + TYPES[a])) { valid = true; break; } } if ( valid ) { Process p = Runtime.getRuntime().exec("reg ADD \"" + loc + "\" /v \"" + name + "\" /t \"" + dType + "\" /d \"" + value + "\""); BufferedReader in = new BufferedReader( new InputStreamReader( p.getInputStream() ) ); String out = ""; while ( (out = in.readLine() ) != null ) { if (out.equalsIgnoreCase("The operation completed successfully.")) { comp = true; } } in.close(); } return comp; } protected boolean delete(String loc, String key) throws Exception { boolean comp = false; Process p = Runtime.getRuntime().exec("reg DELETE \"" + loc + "\" /v \"" + key + "\" /f"); BufferedReader in = new BufferedReader( new InputStreamReader( p.getInputStream() ) ); String out = ""; while ( ( out = in.readLine() ) != null ) { if (out.equalsIgnoreCase("The operation completed successfully.")) { comp = true; } } in.close(); return comp; } } |
