编译Java文件时获取报错信息

src/main/java/org/rcisoft/business/tquestion/entity/TQuestion.java

@@ -44,6 +44,7 @@ public class TQuestion  extends IdEntity<TQuestion> {
      @Transient
      List<Map<String,Object>> questionOptions;
 
+     @Transient
      List<TQuestionOptions> options;
 
     public TQuestion(String businessId) {

src/main/java/org/rcisoft/core/util/CompileUtil.java

@@ -28,71 +28,77 @@ public class CompileUtil {
             java_class = "java "+fileName;
 		}
 
-        Runtime r1 = Runtime.getRuntime();
-        Process p1 = null;
-        Boolean comResult1 =true;
+        Runtime runJavac = Runtime.getRuntime();
         String result="";
         try {
-            //先编译java文件
-            p1 = r1.exec(java, null, dir);
-            InputStreamReader ir = new InputStreamReader(p1.getInputStream(),"GBK");
-            LineNumberReader input = new LineNumberReader(ir);
-            StringBuilder sb = new StringBuilder();
+            //先编译java文件  java文件编译成功时不会有信息报出，所以此处只取错误信息
+            StringBuilder message = new StringBuilder();
+            Process javac = runJavac.exec(java, null, dir);
+            InputStreamReader error = new InputStreamReader(javac.getErrorStream(),"GBK");
+            LineNumberReader errorInput = new LineNumberReader(error);
             boolean firstLine = true;
-            String line;
+            String line = "";
+
             //取出输出结果
-            while ((line = input.readLine()) != null) {
-                comResult1 = false;
+            while ((line = errorInput.readLine()) != null) {
                 if(!firstLine){
-                    sb.append(System.getProperty("line.separator"));
+                    message.append(System.getProperty("line.separator"));
                 }else{
                     firstLine = false;
                 }
-                sb.append(line);
-            }
-            input.close();
-            ir.close();
-            result = sb.toString();
-            /*if(input.readLine()!=null) {
-            	comResult1 = false;
-            }*/
-            if(!comResult1) {
-
-                return result;
-            }
-            String classUrl = fileUrl+fileName+".class";
-            File classFile = new File(classUrl);
-            while(!classFile.exists()) {
-                Thread.sleep(10);
-                if(!comResult1) {
-                    break;
-                }
+                message.append(line);
             }
-            Runtime r2 = Runtime.getRuntime();
-            Process p2 = null;
-            p2 = r2.exec(java_class, null, dir);
-            InputStreamReader isr = new InputStreamReader(p2.getInputStream(),"GBK");
-            LineNumberReader lnr = new LineNumberReader(isr);
+            message.append(line);
+            error.close();
+            errorInput.close();
+            result = message.toString();
 
-            StringBuilder sbl = new StringBuilder();
-            boolean firstLine2 = true;
-            String line2;
 
-            while ((line2 = lnr.readLine()) != null) {
-                if(!firstLine2){
-                    sbl.append(System.getProperty("line.separator"));
-                }else{
-                    firstLine2 = false;
+            if(result.equals("null")) {
+                //java文件编译成功，开始编译class文件
+                StringBuilder classMessage = new StringBuilder();
+                firstLine = true;
+                boolean wrong = true;
+                String classUrl = fileUrl + fileName + ".class";
+                File classFile = new File(classUrl);
+                while (!classFile.exists()) {
+                    Thread.sleep(10);
+                }
+                Runtime runClass = Runtime.getRuntime();
+                Process Class = runClass.exec(java_class, null, dir);
+                InputStreamReader successIsr = new InputStreamReader(Class.getInputStream(), "GBK");//成功信息
+                InputStreamReader errorIsr = new InputStreamReader(Class.getErrorStream(), "GBK");//失败信息
+                LineNumberReader successLnr = new LineNumberReader(successIsr);
+                LineNumberReader errorLnr = new LineNumberReader(errorIsr);
+                while ((line = successLnr.readLine()) != null) {
+                    wrong = false;
+                    if (!firstLine) {
+                        classMessage.append(System.getProperty("line.separator"));
+                    } else {
+                        firstLine = false;
+                    }
+                    classMessage.append(line);
+                }
+                if(wrong){
+                    while ((line = errorLnr.readLine()) != null) {
+                        if (!firstLine) {
+                            classMessage.append(System.getProperty("line.separator"));
+                        } else {
+                            firstLine = false;
+                        }
+                        classMessage.append(line);
+                    }
                 }
-                sbl.append(line2);
+                result = classMessage.toString();
+                successLnr.close();
+                successIsr.close();
+                errorLnr.close();
+                errorIsr.close();
+                classFile.delete();
+                Class.waitFor();
+                Class.destroy();
             }
-            lnr.close();
-            isr.close();
-            result = sbl.toString();
             file.delete();
-            classFile.delete();
-            p2.waitFor();
-            p2.destroy();
         } catch (IOException e) {
             e.printStackTrace();
         }