修复spotbugs问题

Author: chengyouling

demo/demo-cse-v1/test-client/src/main/java/org/apache/servicecomb/samples/HelloWorldIT.java

@@ -119,8 +119,7 @@ private void testHelloWorldNoHeader() {
       }
     }
 
-    double ratio = oldCount / (float) (oldCount + newCount);
-    TestMgr.check(ratio == 0.5, true);
+    TestMgr.check(oldCount == newCount, true);
   }
 
   private void testHelloWorldEmptyProtectionCloseWeight100() {

demo/demo-spring-boot-transport/demo-spring-boot-pojo-client/src/main/java/org/apache/servicecomb/demo/pojo/client/PojoClientTest.java

@@ -40,11 +40,11 @@ public class PojoClientTest {
   @RpcReference(microserviceName = "pojo")
   public static Test test;
 
-  public static Test testFromXml;
+  private static Test testFromXml;
 
-  public static final byte[] buffer = new byte[1024];
+  private static final byte[] buffer = new byte[1024];
 
-  public static final String SPLITPARAM_RESPONSE_USER_SUFFIX = "(modified by MyHandler)";
+  private static final String SPLITPARAM_RESPONSE_USER_SUFFIX = "(modified by MyHandler)";
 
   static {
     Arrays.fill(buffer, (byte) 1);

demo/demo-zeroconfig-schemadiscovery-registry/demo-zeroconfig-schemadiscovery-registry-server/src/main/java/org/apache/servicecomb/demo/zeroconfig/server/SelfServiceInvoker.java

@@ -33,10 +33,14 @@ interface IServerEndpoint {
 
   public CountDownLatch latch = new CountDownLatch(1);
 
-  public String result = "";
+  private String result = "";
 
   public void onAfterRegistry(BootEvent event) {
     result = endpoint.getName("hello");
     latch.countDown();
   }
+
+  public String getResult() {
+    return result;
+  }
 }

demo/demo-zeroconfig-schemadiscovery-registry/demo-zeroconfig-schemadiscovery-registry-server/src/main/java/org/apache/servicecomb/demo/zeroconfig/server/ServerApplication.java

@@ -33,7 +33,7 @@ public static void main(final String[] args) throws Exception {
 
     SelfServiceInvoker invoker = BeanUtils.getBean("SelfServiceInvoker");
     invoker.latch.await(10, TimeUnit.SECONDS);
-    TestMgr.check(invoker.result, "hello");
+    TestMgr.check(invoker.getResult(), "hello");
 
     TestMgr.summary();
     if (!TestMgr.errors().isEmpty()) {