.

apq-pc-client/src/main/java/com/priusis/cache/InstalledProgramCache.java

@@ -11,6 +11,7 @@ import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
 
 /**
  * @author yangli
@@ -22,13 +23,15 @@ public class InstalledProgramCache {
 
     private static List<Map<String, String>> programList;
 
+
+
     public List<Map<String, String>> getPrograms() throws IOException {
         if (programList == null) loadProgramListJob();
         return programList;
     }
 
 
-    @Scheduled(fixedDelay = 5000)
+    @Scheduled(fixedDelay = 300000)
     public void loadProgramListJob() throws IOException {
         List<Map<String, String>> programs = new ArrayList<>();
         String[] regPaths = {
@@ -49,7 +52,10 @@ public class InstalledProgramCache {
         programList = programs;
     }
 
+    private static final Map<String, Map<String, String>> programInfoCache = new ConcurrentHashMap<>();
+
     private Map<String, String> queryProgramInfo(String key) throws IOException {
+        if (programInfoCache.containsKey(key)) return programInfoCache.get(key);
         Map<String, String> info = new HashMap<>();
         Process process = Runtime.getRuntime().exec("cmd /c reg query " + key);
         try (BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream(), "GBK"))) {
@@ -68,6 +74,13 @@ public class InstalledProgramCache {
             }
             process.destroy();
         }
+        programInfoCache.put(key, info);
         return info;
     }
+
+    // 30分钟清除一次缓存
+    @Scheduled(fixedDelay = 1800000)
+    public void clearProgramInfoCache() {
+        programInfoCache.clear();
+    }
 }

apq-pc-client/src/main/java/com/priusis/controller/ProgramController.java

@@ -216,6 +216,8 @@ public class ProgramController {
     @GetMapping(value = "{type}/get_version")
     public R<String> getVersion(@PathVariable @Pattern(regexp = "install|upgrade") String type,
                                 @RequestParam @NotBlank String name) throws IOException {
+        // 查最新版本之前，手动清掉缓存，重新扫一遍
+        installedProgramCache.clearProgramInfoCache();
         installedProgramCache.loadProgramListJob();
         return type.equals("install") ?
                 installedProgramCache.getPrograms().stream()