feat(scaffold): support integration with gson

README.md

@@ -81,7 +81,7 @@ $ yo deepexi-spring-cloud --help
 |APM|✅️SkyWalking|☑️Zipkin|☑️PinPoint|
 |分库分表|☑️Sharding-JDBC|☑️MyCAT|
 |服务器|✅Tomcat|☑️Jetty|☑️Undertow|
-|JSON解析器|✅Jackson|✅️FastJson|☑️Gson|
+|JSON解析器|✅Jackson|✅️FastJson|✅️Gson|
 |模板引擎|✅Thymeleaf|☑️Freemarker|
 |对象存储|☑️AliOSS|☑️FastDFS|
 |ORM|✅MybatisPlus|✅Mapper|☑️JPA|

generators/app/handler/configurer/gson_configurer.js

@@ -0,0 +1,31 @@
+const _ = require('lodash');
+
+module.exports = {
+  key: 'gson',
+  fn: {
+    configureProviderPomDependencies (optionalDependencies, props) {
+      optionalDependencies.push({
+        dependency: [
+          { groupId: 'com.google.code.gson' },
+          { artifactId: 'gson' }
+        ]
+      })
+    },
+    configureApplicationYaml (yaml, env, props) {
+      switch (env) {
+        case 'default': {
+          _.merge(yaml, {
+            spring: {
+              http: {
+                converters: {
+                  'preferred-json-mapper': 'gson'
+                }
+              }
+            }
+          });
+          break;
+        }
+      }
+    }
+  }
+}

generators/app/index.js

@@ -37,7 +37,8 @@ const obj = {
       type: 'list',
       choices: [
         'jackson',
-        'fastjson'
+        'fastjson',
+        'gson'
       ],
       message: '请选择你使用的JSON解析器'
     },

generators/app/templates/${artifactId}-provider/src/main/java/${basePath}/config/web/if_gson.GsonConfigurer.tmpl.java

@@ -0,0 +1,27 @@
+package ${basePackage}.config.web;
+
+import com.google.gson.*;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+import springfox.documentation.spring.web.json.Json;
+
+import java.lang.reflect.Type;
+
+@Configuration
+public class GsonConfigurer implements WebMvcConfigurer {
+    @Bean
+    public GsonBuilder gsonBuilder() {
+        GsonBuilder builder = new GsonBuilder();
+        // for spring fox swagger json serialization
+        builder.registerTypeAdapter(Json.class, new JsonSerializer<Json>() {
+            private JsonParser parser = new JsonParser();
+
+            @Override
+            public JsonElement serialize(Json json, Type type, JsonSerializationContext jsonSerializationContext) {
+                return parser.parse(json.value());
+            }
+        });
+        return builder;
+    }
+}

generators/test/app/index.test.js

@@ -307,7 +307,8 @@ const expects = {
   thymeleaf: new Expect(),
   redis: new Expect(),
   skywalking: new Expect(),
-  fastjson: new Expect()
+  fastjson: new Expect(),
+  gson: new Expect()
 };
 
 const required = expects.required;
@@ -628,6 +629,27 @@ fastjson.addProviderClasses([
   'config/web/FastJsonConfigurer.java'
 ])
 
+const gson = expects.gson;
+gson.addProviderArtifacts([
+  'gson'
+])
+gson.addProviderClasses([
+  'config/web/GsonConfigurer.java'
+])
+gson.assertProperties = () => {
+  it('should have properties', () => {
+    assert.strictEqual(readYamlConfigs().spring.http.converters['preferred-json-mapper'], 'gson')
+  });
+}
+gson.assertNoProperties = () => {
+  it('should have properties', () => {
+    try {
+      assert.notStrictEqual(readYamlConfigs().spring.http.converters['preferred-json-mapper'], 'gson');
+    } catch (e) {
+    }
+  });
+}
+
 function assertByExpected (expected, expects) {
   describe('required files or classes', () => {
     for (const key in expects) {
@@ -831,5 +853,16 @@ describe('optional dependencies', () => {
 
       assertByExpected(['required', 'demo', 'fastjson'], expects)
     });
+
+    describe('gson', () => {
+      before(() => {
+        return generate({
+          jsonParser: 'gson',
+          demo: true
+        })
+      });
+
+      assertByExpected(['required', 'demo', 'gson'], expects)
+    });
   });
 });