diff --git a/backend/src/main/java/io/metersphere/api/dto/definition/request/MsScenario.java b/backend/src/main/java/io/metersphere/api/dto/definition/request/MsScenario.java
index d76439cb5f..d6b73cc520 100644
--- a/backend/src/main/java/io/metersphere/api/dto/definition/request/MsScenario.java
+++ b/backend/src/main/java/io/metersphere/api/dto/definition/request/MsScenario.java
@@ -54,6 +54,7 @@ public class MsScenario extends MsTestElement {
 
     private static final String BODY_FILE_DIR = "/opt/metersphere/data/body";
 
+    @Override
     public void toHashTree(HashTree tree, List<MsTestElement> hashTree, ParameterConfig config) {
         if (!this.isEnable()) {
             return;
diff --git a/backend/src/main/java/io/metersphere/api/dto/definition/request/MsTestPlan.java b/backend/src/main/java/io/metersphere/api/dto/definition/request/MsTestPlan.java
index b45f3c2bd0..c9fb3fae2b 100644
--- a/backend/src/main/java/io/metersphere/api/dto/definition/request/MsTestPlan.java
+++ b/backend/src/main/java/io/metersphere/api/dto/definition/request/MsTestPlan.java
@@ -18,6 +18,7 @@ import java.util.List;
 public class MsTestPlan extends MsTestElement {
     private String type = "TestPlan";
 
+    @Override
     public void toHashTree(HashTree tree, List<MsTestElement> hashTree, ParameterConfig config) {
         final HashTree testPlanTree = tree.add(getPlan());
         if (CollectionUtils.isNotEmpty(hashTree)) {
diff --git a/backend/src/main/java/io/metersphere/api/dto/definition/request/MsThreadGroup.java b/backend/src/main/java/io/metersphere/api/dto/definition/request/MsThreadGroup.java
index 1687c52f0b..980202c675 100644
--- a/backend/src/main/java/io/metersphere/api/dto/definition/request/MsThreadGroup.java
+++ b/backend/src/main/java/io/metersphere/api/dto/definition/request/MsThreadGroup.java
@@ -20,6 +20,7 @@ public class MsThreadGroup extends MsTestElement {
     private String type = "ThreadGroup";
     private boolean enableCookieShare;
 
+    @Override
     public void toHashTree(HashTree tree, List<MsTestElement> hashTree, ParameterConfig config) {
         final HashTree groupTree = tree.add(getThreadGroup());
         if ((config != null && config.isEnableCookieShare()) || enableCookieShare) {
diff --git a/backend/src/main/java/io/metersphere/api/dto/definition/request/assertions/MsAssertions.java b/backend/src/main/java/io/metersphere/api/dto/definition/request/assertions/MsAssertions.java
index 21fcf65837..842e0acab8 100644
--- a/backend/src/main/java/io/metersphere/api/dto/definition/request/assertions/MsAssertions.java
+++ b/backend/src/main/java/io/metersphere/api/dto/definition/request/assertions/MsAssertions.java
@@ -24,6 +24,7 @@ public class MsAssertions extends MsTestElement {
     private MsAssertionDuration duration;
     private String type = "Assertions";
 
+    @Override
     public void toHashTree(HashTree tree, List<MsTestElement> hashTree, ParameterConfig config) {
         if (this.isEnable()) {
             addAssertions(tree);
@@ -79,6 +80,8 @@ public class MsAssertions extends MsTestElement {
             case "Response Data":
                 assertion.setTestFieldResponseData();
                 break;
+            default:
+                break;
         }
         return assertion;
     }
diff --git a/backend/src/main/java/io/metersphere/api/dto/definition/request/auth/MsAuthManager.java b/backend/src/main/java/io/metersphere/api/dto/definition/request/auth/MsAuthManager.java
index 1fa4106320..18beab89f0 100644
--- a/backend/src/main/java/io/metersphere/api/dto/definition/request/auth/MsAuthManager.java
+++ b/backend/src/main/java/io/metersphere/api/dto/definition/request/auth/MsAuthManager.java
@@ -51,6 +51,7 @@ public class MsAuthManager extends MsTestElement {
     @JSONField(ordinal = 28)
     private String environment;
 
+    @Override
     public void toHashTree(HashTree tree, List<MsTestElement> hashTree, ParameterConfig config) {
         if (!this.isEnable()) {
             return;
diff --git a/backend/src/main/java/io/metersphere/api/dto/definition/request/configurations/MsHeaderManager.java b/backend/src/main/java/io/metersphere/api/dto/definition/request/configurations/MsHeaderManager.java
index d8158136db..6f44d3fb23 100644
--- a/backend/src/main/java/io/metersphere/api/dto/definition/request/configurations/MsHeaderManager.java
+++ b/backend/src/main/java/io/metersphere/api/dto/definition/request/configurations/MsHeaderManager.java
@@ -25,6 +25,7 @@ public class MsHeaderManager extends MsTestElement {
     @JSONField(ordinal = 20)
     private List<KeyValue> headers;
 
+    @Override
     public void toHashTree(HashTree tree, List<MsTestElement> hashTree, ParameterConfig config) {
         if (!this.isEnable()) {
             return;
diff --git a/backend/src/main/java/io/metersphere/api/dto/definition/request/controller/MsIfController.java b/backend/src/main/java/io/metersphere/api/dto/definition/request/controller/MsIfController.java
index dd01f99994..3f351f1c25 100644
--- a/backend/src/main/java/io/metersphere/api/dto/definition/request/controller/MsIfController.java
+++ b/backend/src/main/java/io/metersphere/api/dto/definition/request/controller/MsIfController.java
@@ -24,6 +24,7 @@ public class MsIfController extends MsTestElement {
     private String operator;
     private String value;
 
+    @Override
     public void toHashTree(HashTree tree, List<MsTestElement> hashTree, ParameterConfig config) {
         if (!this.isEnable()) {
             return;
@@ -39,7 +40,7 @@ public class MsIfController extends MsTestElement {
     private IfController ifController() {
         IfController ifController = new IfController();
         ifController.setEnabled(true);
-        ifController.setName(this.getLabel());
+        ifController.setName(this.getLabelName());
         ifController.setCondition(this.getCondition());
         ifController.setProperty(TestElement.TEST_CLASS, IfController.class.getName());
         ifController.setProperty(TestElement.GUI_CLASS, SaveService.aliasToClass("IfControllerPanel"));
@@ -55,7 +56,7 @@ public class MsIfController extends MsTestElement {
         return StringUtils.isNotBlank(variable) && StringUtils.isNotBlank(operator) && StringUtils.isNotBlank(value);
     }
 
-    public String getLabel() {
+    public String getLabelName() {
         if (isValid()) {
             String label = variable + " " + operator;
             if (StringUtils.isNotBlank(value)) {
diff --git a/backend/src/main/java/io/metersphere/api/dto/definition/request/controller/MsLoopController.java b/backend/src/main/java/io/metersphere/api/dto/definition/request/controller/MsLoopController.java
index 7f5390287a..0f4bce52d2 100644
--- a/backend/src/main/java/io/metersphere/api/dto/definition/request/controller/MsLoopController.java
+++ b/backend/src/main/java/io/metersphere/api/dto/definition/request/controller/MsLoopController.java
@@ -38,14 +38,15 @@ public class MsLoopController extends MsTestElement {
     @JSONField(ordinal = 23)
     private MsWhileController whileController;
 
+    @Override
     public void toHashTree(HashTree tree, List<MsTestElement> hashTree, ParameterConfig config) {
         if (!this.isEnable()) {
             return;
         }
         GenericController controller = controller();
-        if (controller == null)
+        if (controller == null) {
             return;
-
+        }
         final HashTree groupTree = tree.add(controller);
         if (CollectionUtils.isNotEmpty(hashTree)) {
             hashTree.forEach(el -> {
diff --git a/backend/src/main/java/io/metersphere/api/dto/definition/request/dns/MsDNSCacheManager.java b/backend/src/main/java/io/metersphere/api/dto/definition/request/dns/MsDNSCacheManager.java
index 38dea36a09..871b834286 100644
--- a/backend/src/main/java/io/metersphere/api/dto/definition/request/dns/MsDNSCacheManager.java
+++ b/backend/src/main/java/io/metersphere/api/dto/definition/request/dns/MsDNSCacheManager.java
@@ -24,6 +24,7 @@ import java.util.List;
 @JSONType(typeName = "DNSCacheManager")
 public class MsDNSCacheManager extends MsTestElement {
 
+    @Override
     public void toHashTree(HashTree tree, List<MsTestElement> hashTree, ParameterConfig config) {
         if (!this.isEnable()) {
             return;
diff --git a/backend/src/main/java/io/metersphere/api/dto/definition/request/extract/MsExtract.java b/backend/src/main/java/io/metersphere/api/dto/definition/request/extract/MsExtract.java
index 17b81206dd..9d7a0dc552 100644
--- a/backend/src/main/java/io/metersphere/api/dto/definition/request/extract/MsExtract.java
+++ b/backend/src/main/java/io/metersphere/api/dto/definition/request/extract/MsExtract.java
@@ -27,6 +27,7 @@ public class MsExtract extends MsTestElement {
     private List<MsExtractXPath> xpath;
     private String type = "Extract";
 
+    @Override
     public void toHashTree(HashTree tree, List<MsTestElement> hashTree, ParameterConfig config) {
         if (!this.isEnable()) {
             return;
diff --git a/backend/src/main/java/io/metersphere/api/dto/definition/request/processors/MsJSR223Processor.java b/backend/src/main/java/io/metersphere/api/dto/definition/request/processors/MsJSR223Processor.java
index 880b20fb13..f9cb893ac6 100644
--- a/backend/src/main/java/io/metersphere/api/dto/definition/request/processors/MsJSR223Processor.java
+++ b/backend/src/main/java/io/metersphere/api/dto/definition/request/processors/MsJSR223Processor.java
@@ -27,6 +27,7 @@ public class MsJSR223Processor extends MsTestElement {
     @JSONField(ordinal = 21)
     private String scriptLanguage;
 
+    @Override
     public void toHashTree(HashTree tree, List<MsTestElement> hashTree, ParameterConfig config) {
         if (!this.isEnable()) {
             return;
diff --git a/backend/src/main/java/io/metersphere/api/dto/definition/request/processors/post/MsJSR223PostProcessor.java b/backend/src/main/java/io/metersphere/api/dto/definition/request/processors/post/MsJSR223PostProcessor.java
index 4a922577da..a473882557 100644
--- a/backend/src/main/java/io/metersphere/api/dto/definition/request/processors/post/MsJSR223PostProcessor.java
+++ b/backend/src/main/java/io/metersphere/api/dto/definition/request/processors/post/MsJSR223PostProcessor.java
@@ -27,7 +27,7 @@ public class MsJSR223PostProcessor extends MsTestElement {
     @JSONField(ordinal = 21)
     private String scriptLanguage;
 
-
+    @Override
     public void toHashTree(HashTree tree, List<MsTestElement> hashTree, ParameterConfig config) {
         if (!this.isEnable()) {
             return;
diff --git a/backend/src/main/java/io/metersphere/api/dto/definition/request/processors/pre/MsJSR223PreProcessor.java b/backend/src/main/java/io/metersphere/api/dto/definition/request/processors/pre/MsJSR223PreProcessor.java
index acea42c0e1..9f76eab72b 100644
--- a/backend/src/main/java/io/metersphere/api/dto/definition/request/processors/pre/MsJSR223PreProcessor.java
+++ b/backend/src/main/java/io/metersphere/api/dto/definition/request/processors/pre/MsJSR223PreProcessor.java
@@ -27,6 +27,7 @@ public class MsJSR223PreProcessor extends MsTestElement {
     @JSONField(ordinal = 21)
     private String scriptLanguage;
 
+    @Override
     public void toHashTree(HashTree tree, List<MsTestElement> hashTree, ParameterConfig config) {
         if (!this.isEnable()) {
             return;
diff --git a/backend/src/main/java/io/metersphere/api/dto/definition/request/sampler/MsDubboSampler.java b/backend/src/main/java/io/metersphere/api/dto/definition/request/sampler/MsDubboSampler.java
index 5ed1ae4cdd..d59d5fff20 100644
--- a/backend/src/main/java/io/metersphere/api/dto/definition/request/sampler/MsDubboSampler.java
+++ b/backend/src/main/java/io/metersphere/api/dto/definition/request/sampler/MsDubboSampler.java
@@ -54,14 +54,15 @@ public class MsDubboSampler extends MsTestElement {
     @JSONField(ordinal = 60)
     private Object requestResult;
 
+    @Override
     public void toHashTree(HashTree tree, List<MsTestElement> hashTree, ParameterConfig config) {
         if (!this.isEnable()) {
             return;
         }
-        if (this.getReferenced() != null && this.getReferenced().equals("Deleted")) {
+        if (this.getReferenced() != null && "Deleted".equals(this.getReferenced())) {
             return;
         }
-        if (this.getReferenced() != null && this.getReferenced().equals("REF")) {
+        if (this.getReferenced() != null && "REF".equals(this.getReferenced())) {
             this.getRefElement(this);
         }
 
diff --git a/backend/src/main/java/io/metersphere/api/dto/definition/request/sampler/MsHTTPSamplerProxy.java b/backend/src/main/java/io/metersphere/api/dto/definition/request/sampler/MsHTTPSamplerProxy.java
index 0ae7c5a4b6..65d1031b47 100644
--- a/backend/src/main/java/io/metersphere/api/dto/definition/request/sampler/MsHTTPSamplerProxy.java
+++ b/backend/src/main/java/io/metersphere/api/dto/definition/request/sampler/MsHTTPSamplerProxy.java
@@ -31,7 +31,6 @@ import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
 
-
 @Data
 @EqualsAndHashCode(callSuper = true)
 @JSONType(typeName = "HTTPSamplerProxy")
@@ -86,11 +85,12 @@ public class MsHTTPSamplerProxy extends MsTestElement {
     @JSONField(ordinal = 35)
     private Object requestResult;
 
+    @Override
     public void toHashTree(HashTree tree, List<MsTestElement> hashTree, ParameterConfig config) {
         if (!this.isEnable()) {
             return;
         }
-        if (this.getReferenced() != null && this.getReferenced().equals("REF")) {
+        if (this.getReferenced() != null && "REF".equals(this.getReferenced())) {
             this.getRefElement(this);
         }
         HTTPSamplerProxy sampler = new HTTPSamplerProxy();
@@ -109,9 +109,9 @@ public class MsHTTPSamplerProxy extends MsTestElement {
         sampler.setFollowRedirects(this.isFollowRedirects());
         sampler.setUseKeepAlive(true);
         sampler.setDoMultipart(this.isDoMultipartPost());
-        if(config != null && config.getConfig() != null){
+        if (config != null && config.getConfig() != null) {
             config.setConfig(config.getConfig());
-        }else{
+        } else {
             config.setConfig(getEnvironmentConfig(useEnvironment));
         }
 
@@ -183,7 +183,7 @@ public class MsHTTPSamplerProxy extends MsTestElement {
         if (!StringUtils.equals(this.getMethod(), "GET")) {
             if (this.body != null) {
                 List<KeyValue> bodyParams = this.body.getBodyParams(sampler, this.getId());
-                if (StringUtils.isNotEmpty(this.body.getType()) && this.body.getType().equals("Form Data")) {
+                if (StringUtils.isNotEmpty(this.body.getType()) && "Form Data".equals(this.body.getType())) {
                     sampler.setDoMultipart(true);
                 }
                 if (CollectionUtils.isNotEmpty(bodyParams)) {
diff --git a/backend/src/main/java/io/metersphere/api/dto/definition/request/sampler/MsJDBCSampler.java b/backend/src/main/java/io/metersphere/api/dto/definition/request/sampler/MsJDBCSampler.java
index f4a97f1405..bb253cad2d 100644
--- a/backend/src/main/java/io/metersphere/api/dto/definition/request/sampler/MsJDBCSampler.java
+++ b/backend/src/main/java/io/metersphere/api/dto/definition/request/sampler/MsJDBCSampler.java
@@ -51,11 +51,12 @@ public class MsJDBCSampler extends MsTestElement {
     @JSONField(ordinal = 28)
     private String dataSourceId;
 
+    @Override
     public void toHashTree(HashTree tree, List<MsTestElement> hashTree, ParameterConfig config) {
         if (!this.isEnable()) {
             return;
         }
-        if (this.getReferenced() != null && this.getReferenced().equals("REF")) {
+        if (this.getReferenced() != null && "REF".equals(this.getReferenced())) {
             this.getRefElement(this);
         }
         if (StringUtils.isNotEmpty(dataSourceId)) {
diff --git a/backend/src/main/java/io/metersphere/api/dto/definition/request/sampler/MsTCPSampler.java b/backend/src/main/java/io/metersphere/api/dto/definition/request/sampler/MsTCPSampler.java
index b545bc405e..e2209f1842 100644
--- a/backend/src/main/java/io/metersphere/api/dto/definition/request/sampler/MsTCPSampler.java
+++ b/backend/src/main/java/io/metersphere/api/dto/definition/request/sampler/MsTCPSampler.java
@@ -59,6 +59,7 @@ public class MsTCPSampler extends MsTestElement {
     @JSONField(ordinal = 36)
     private String useEnvironment;
 
+    @Override
     public void toHashTree(HashTree tree, List<MsTestElement> hashTree, ParameterConfig config) {
         if (!this.isEnable()) {
             return;
diff --git a/backend/src/main/java/io/metersphere/api/dto/definition/request/timer/MsConstantTimer.java b/backend/src/main/java/io/metersphere/api/dto/definition/request/timer/MsConstantTimer.java
index 490bd87588..137dc0b3dc 100644
--- a/backend/src/main/java/io/metersphere/api/dto/definition/request/timer/MsConstantTimer.java
+++ b/backend/src/main/java/io/metersphere/api/dto/definition/request/timer/MsConstantTimer.java
@@ -24,6 +24,7 @@ public class MsConstantTimer extends MsTestElement {
     @JSONField(ordinal = 21)
     private String delay;
 
+    @Override
     public void toHashTree(HashTree tree, List<MsTestElement> hashTree, ParameterConfig config) {
         if (!this.isEnable()) {
             return;
diff --git a/backend/src/main/java/io/metersphere/api/dto/scenario/Body.java b/backend/src/main/java/io/metersphere/api/dto/scenario/Body.java
index 4a71274612..de555a7c9f 100644
--- a/backend/src/main/java/io/metersphere/api/dto/scenario/Body.java
+++ b/backend/src/main/java/io/metersphere/api/dto/scenario/Body.java
@@ -40,13 +40,17 @@ public class Body {
         if (StringUtils.equals(type, FORM_DATA) || StringUtils.equals(type, WWW_FROM)
                 || StringUtils.equals(type, BINARY)) {
             return true;
-        } else return false;
+        } else {
+            return false;
+        }
     }
 
     public boolean isOldKV() {
         if (StringUtils.equals(type, KV)) {
             return true;
-        } else return false;
+        } else {
+            return false;
+        }
     }
 
     public List<KeyValue> getBodyParams(HTTPSamplerProxy sampler, String requestId) {
@@ -63,7 +67,7 @@ public class Body {
             if (!this.isJson()) {
                 sampler.setPostBodyRaw(true);
             } else {
-                if (StringUtils.isNotEmpty(this.format) && this.format.equals("JSON-SCHEMA") && this.getJsonSchema() != null) {
+                if (StringUtils.isNotEmpty(this.format) && "JSON-SCHEMA".equals(this.format) && this.getJsonSchema() != null) {
                     this.raw = JSONSchemaGenerator.getJson(com.alibaba.fastjson.JSON.toJSONString(this.getJsonSchema()));
                 }
             }
diff --git a/backend/src/main/java/io/metersphere/api/jmeter/TestResult.java b/backend/src/main/java/io/metersphere/api/jmeter/TestResult.java
index 925ff066c2..c8914871e7 100644
--- a/backend/src/main/java/io/metersphere/api/jmeter/TestResult.java
+++ b/backend/src/main/java/io/metersphere/api/jmeter/TestResult.java
@@ -40,16 +40,16 @@ public class TestResult {
         this.passAssertions += count;
     }
 
-    private static final String separator = "<->";
+    private static final String SEPARATOR = "<->";
 
     public void addScenario(ScenarioResult result) {
         Map<String, List<RequestResult>> requestResultMap = new LinkedHashMap<>();
         if (result != null && CollectionUtils.isNotEmpty(result.getRequestResults())) {
             result.getRequestResults().forEach(item -> {
-                if (StringUtils.isNotEmpty(item.getName()) && item.getName().indexOf(separator) != -1) {
-                    String array[] = item.getName().split(separator);
+                if (StringUtils.isNotEmpty(item.getName()) && item.getName().indexOf(SEPARATOR) != -1) {
+                    String array[] = item.getName().split(SEPARATOR);
                     String scenarioName = array[array.length - 1];
-                    item.setName(item.getName().replace(separator + scenarioName, ""));
+                    item.setName(item.getName().replace(SEPARATOR + scenarioName, ""));
                     if (requestResultMap.containsKey(scenarioName)) {
                         requestResultMap.get(scenarioName).add(item);
                     } else {
diff --git a/backend/src/main/java/io/metersphere/api/parse/JmeterDocumentParser.java b/backend/src/main/java/io/metersphere/api/parse/JmeterDocumentParser.java
index 4acf7f5690..ab0fcc08fa 100644
--- a/backend/src/main/java/io/metersphere/api/parse/JmeterDocumentParser.java
+++ b/backend/src/main/java/io/metersphere/api/parse/JmeterDocumentParser.java
@@ -157,7 +157,7 @@ public class JmeterDocumentParser {
                     u += k + "=" + ScriptEngineUtils.calculate(v);
                     return u;
                 });
-                ele.setTextContent(url + ((params != null && !params.equals("?")) ? params : ""));
+                ele.setTextContent(url + ((params != null && !"?".equals(params)) ? params : ""));
                 break;
             case "Argument.value":
                 String textContent = ele.getTextContent();
diff --git a/backend/src/main/java/io/metersphere/api/service/ApiModuleService.java b/backend/src/main/java/io/metersphere/api/service/ApiModuleService.java
index 89cbbeee16..d79014a1ea 100644
--- a/backend/src/main/java/io/metersphere/api/service/ApiModuleService.java
+++ b/backend/src/main/java/io/metersphere/api/service/ApiModuleService.java
@@ -295,7 +295,7 @@ public class ApiModuleService extends NodeTreeService<ApiModuleDTO> {
         if (level > 8) {
             MSException.throwException(Translator.get("node_deep_limit"));
         }
-        if (rootNode.getId().equals("root")) {
+        if ("root".equals(rootNode.getId())) {
             rootPath = "";
         }
         ApiModule apiDefinitionNode = new ApiModule();
diff --git a/backend/src/main/java/io/metersphere/api/service/ApiScenarioModuleService.java b/backend/src/main/java/io/metersphere/api/service/ApiScenarioModuleService.java
index 0876613978..94a62fb6e7 100644
--- a/backend/src/main/java/io/metersphere/api/service/ApiScenarioModuleService.java
+++ b/backend/src/main/java/io/metersphere/api/service/ApiScenarioModuleService.java
@@ -253,7 +253,7 @@ public class ApiScenarioModuleService extends NodeTreeService<ApiScenarioModuleD
         if (level > 8) {
             MSException.throwException(Translator.get("node_deep_limit"));
         }
-        if (rootNode.getId().equals("root")) {
+        if ("root".equals(rootNode.getId())) {
             rootPath = "";
         }
         ApiScenarioModule apiScenarioModule = new ApiScenarioModule();