释放双眼，带上耳机，听听看~！
一：添加freemarker依赖
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2 <groupId>org.freemarker</groupId>
3 <artifactId>freemarker</artifactId>
4 <version>2.3.28</version>
5</dependency>
6
二：创建service，serviceImpl，controller模板
在src\test\java\resources\template\generator下创建
service.ftl
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3import ${basePackageModel}.${modelNameUpperCamel};
4import ${basePackage}.core.universal.Service;
5
6/**
7* @Description: ${modelNameUpperCamel}Service接口
8* @author ${author}
9* @date ${date}
10*/
11public interface ${modelNameUpperCamel}Service extends Service<${modelNameUpperCamel}> {
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13}
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service-impl.ftl
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3import ${basePackageDao}.${modelNameUpperCamel}Mapper;
4import ${basePackageModel}.${modelNameUpperCamel};
5import ${basePackageService}.${modelNameUpperCamel}Service;
6import ${basePackage}.core.universal.AbstractService;
7import org.springframework.stereotype.Service;
8import org.springframework.transaction.annotation.Transactional;
9
10import javax.annotation.Resource;
11
12/**
13* @Description: ${modelNameUpperCamel}Service接口实现类
14* @author ${author}
15* @date ${date}
16*/
17@Service
18public class ${modelNameUpperCamel}ServiceImpl extends AbstractService<${modelNameUpperCamel}> implements ${modelNameUpperCamel}Service {
19
20 @Resource
21 private ${modelNameUpperCamel}Mapper ${modelNameLowerCamel}Mapper;
22
23}
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controller.ftl
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3import ${basePackage}.core.ret.RetResult;
4import ${basePackage}.core.ret.RetResponse;
5import ${basePackageModel}.${modelNameUpperCamel};
6import ${basePackageService}.${modelNameUpperCamel}Service;
7import com.github.pagehelper.PageHelper;
8import com.github.pagehelper.PageInfo;
9import org.springframework.web.bind.annotation.PostMapping;
10import org.springframework.web.bind.annotation.RequestMapping;
11import org.springframework.web.bind.annotation.RequestParam;
12import org.springframework.web.bind.annotation.RestController;
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14import javax.annotation.Resource;
15import java.util.List;
16
17/**
18* @Description: ${modelNameUpperCamel}Controller类
19* @author ${author}
20* @date ${date}
21*/
22@RestController
23@RequestMapping("/${baseRequestMapping}")
24public class ${modelNameUpperCamel}Controller {
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26 @Resource
27 private ${modelNameUpperCamel}Service ${modelNameLowerCamel}Service;
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29 @PostMapping("/insert")
30 public RetResult<Integer> insert(${modelNameUpperCamel} ${modelNameLowerCamel}) throws Exception{
31 Integer state = ${modelNameLowerCamel}Service.insert(${modelNameLowerCamel});
32 return RetResponse.makeOKRsp(state);
33 }
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35 @PostMapping("/deleteById")
36 public RetResult<Integer> deleteById(@RequestParam String id) throws Exception {
37 Integer state = ${modelNameLowerCamel}Service.deleteById(id);
38 return RetResponse.makeOKRsp(state);
39 }
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41 @PostMapping("/update")
42 public RetResult<Integer> update(${modelNameUpperCamel} ${modelNameLowerCamel}) throws Exception {
43 Integer state = ${modelNameLowerCamel}Service.update(${modelNameLowerCamel});
44 return RetResponse.makeOKRsp(state);
45 }
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47 @PostMapping("/selectById")
48 public RetResult<${modelNameUpperCamel}> selectById(@RequestParam String id) throws Exception {
49 ${modelNameUpperCamel} ${modelNameLowerCamel} = ${modelNameLowerCamel}Service.selectById(id);
50 return RetResponse.makeOKRsp(${modelNameLowerCamel});
51 }
52
53 /**
54 * @Description: 分页查询
55 * @param page 页码
56 * @param size 每页条数
57 * @Reutrn RetResult<PageInfo<${modelNameUpperCamel}>>
58 */
59 @PostMapping("/list")
60 public RetResult<PageInfo<${modelNameUpperCamel}>> list(@RequestParam(defaultValue = "0") Integer page,
61 @RequestParam(defaultValue = "0") Integer size) throws Exception {
62 PageHelper.startPage(page, size);
63 List<${modelNameUpperCamel}> list = ${modelNameLowerCamel}Service.selectAll();
64 PageInfo<${modelNameUpperCamel}> pageInfo = new PageInfo<${modelNameUpperCamel}>(list);
65 return RetResponse.makeOKRsp(pageInfo);
66 }
67}
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三：修改上篇文章中提到的CodeGenerator为如下
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2
3import com.example.demo.core.constant.ProjectConstant;
4import com.google.common.base.CaseFormat;
5import freemarker.template.TemplateExceptionHandler;
6import org.apache.commons.lang3.StringUtils;
7import org.mybatis.generator.api.MyBatisGenerator;
8import org.mybatis.generator.config.*;
9import org.mybatis.generator.internal.DefaultShellCallback;
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11import java.io.File;
12import java.io.FileWriter;
13import java.io.IOException;
14import java.text.SimpleDateFormat;
15import java.util.*;
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17/**
18 * @author phubing
19 * @Description: 代码生成器，根据数据表名称生成对应的Model、Mapper、Service、Controller简化开发。
20 * @date 2019/4/23 20:28
21 */
22public class CodeGenerator {
23
24 // JDBC配置，请修改为你项目的实际配置
25 private static final String JDBC_URL = "jdbc:mysql://localhost:3333/demo";
26 private static final String JDBC_USERNAME = "root";
27 private static final String JDBC_PASSWORD = "123456";
28 private static final String JDBC_DIVER_CLASS_NAME = "com.mysql.jdbc.Driver";
29 // 模板位置
30 private static final String TEMPLATE_FILE_PATH = "src/test/java/resources/template/generator";
31 private static final String JAVA_PATH = "src/main/java"; // java文件路径
32 private static final String RESOURCES_PATH = "src/main/resources";// 资源文件路径
33 // 生成的Service存放路径
34 private static final String PACKAGE_PATH_SERVICE = packageConvertPath(ProjectConstant.SERVICE_PACKAGE);
35 // 生成的Service实现存放路径
36 private static final String PACKAGE_PATH_SERVICE_IMPL = packageConvertPath(ProjectConstant.SERVICE_IMPL_PACKAGE);
37 // 生成的Controller存放路径
38 private static final String PACKAGE_PATH_CONTROLLER = packageConvertPath(ProjectConstant.CONTROLLER_PACKAGE);
39
40 // @author
41 private static final String AUTHOR = "张瑶";
42 // @date
43 private static final String DATE = new SimpleDateFormat("yyyy/MM/dd HH:mm").format(new Date());
44
45 /**
46 * genCode("输入表名");
47 * @param args
48 */
49 public static void main(String[] args) {
50 genCode("system_log");
51 }
52
53 /**
54 * 通过数据表名称生成代码，Model 名称通过解析数据表名称获得，下划线转大驼峰的形式。 如输入表名称 "t_user_detail" 将生成
55 * TUserDetail、TUserDetailMapper、TUserDetailService ...
56 *
57 * @param tableNames 数据表名称...
58 */
59 public static void genCode(String... tableNames) {
60 for (String tableName : tableNames) {
61 genCode(tableName);
62 }
63 }
64
65 /**
66 * 通过数据表名称生成代码 如输入表名称 "user_info"
67 * 将生成 UserInfo、UserInfoMapper、UserInfoService ...
68 *
69 * @param tableName 数据表名称
70 */
71 public static void genCode(String tableName) {
72 genModelAndMapper(tableName);
73 genService(tableName);
74 genController(tableName);
75 }
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77 public static void genModelAndMapper(String tableName) {
78 Context context = getContext();
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80 JDBCConnectionConfiguration jdbcConnectionConfiguration = getJDBCConnectionConfiguration();
81 context.setJdbcConnectionConfiguration(jdbcConnectionConfiguration);
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83 PluginConfiguration pluginConfiguration = getPluginConfiguration();
84 context.addPluginConfiguration(pluginConfiguration);
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86 JavaModelGeneratorConfiguration javaModelGeneratorConfiguration = getJavaModelGeneratorConfiguration();
87 context.setJavaModelGeneratorConfiguration(javaModelGeneratorConfiguration);
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89 SqlMapGeneratorConfiguration sqlMapGeneratorConfiguration = getSqlMapGeneratorConfiguration();
90 context.setSqlMapGeneratorConfiguration(sqlMapGeneratorConfiguration);
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92 JavaClientGeneratorConfiguration javaClientGeneratorConfiguration = getJavaClientGeneratorConfiguration();
93 context.setJavaClientGeneratorConfiguration(javaClientGeneratorConfiguration);
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95 TableConfiguration tableConfiguration = new TableConfiguration(context);
96 tableConfiguration.setTableName(tableName);
97 tableConfiguration.setDomainObjectName(null);
98 context.addTableConfiguration(tableConfiguration);
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100 List<String> warnings;
101 MyBatisGenerator generator;
102 try {
103 Configuration config = new Configuration();
104 config.addContext(context);
105 config.validate();
106 boolean overwrite = true;
107 DefaultShellCallback callback = new DefaultShellCallback(overwrite);
108 warnings = new ArrayList<>();
109 generator = new MyBatisGenerator(config, callback, warnings);
110 generator.generate(null);
111 } catch (Exception e) {
112 throw new RuntimeException("生成Model和Mapper失败", e);
113 }
114
115 if (generator.getGeneratedJavaFiles().isEmpty() || generator.getGeneratedXmlFiles().isEmpty()) {
116 throw new RuntimeException("生成Model和Mapper失败：" + warnings);
117 }
118 String modelName = tableNameConvertUpperCamel(tableName);
119 System.out.println(modelName + ".java 生成成功");
120 System.out.println(modelName + "Mapper.java 生成成功");
121 System.out.println(modelName + "Mapper.xml 生成成功");
122 }
123
124 public static void genService(String tableName) {
125 try {
126 freemarker.template.Configuration cfg = getConfiguration();
127 //模板所需要的参数
128 Map<String, Object> data = new HashMap<>();
129 data.put("date", DATE);
130 data.put("author", AUTHOR);
131 String modelNameUpperCamel = tableNameConvertUpperCamel(tableName);
132 data.put("modelNameUpperCamel", modelNameUpperCamel);
133 data.put("modelNameLowerCamel", CaseFormat.UPPER_CAMEL.to(CaseFormat.LOWER_CAMEL, modelNameUpperCamel));
134 data.put("basePackage", ProjectConstant.BASE_PACKAGE);
135 data.put("basePackageService", ProjectConstant.SERVICE_PACKAGE);
136 data.put("basePackageServiceImpl", ProjectConstant.SERVICE_IMPL_PACKAGE);
137 data.put("basePackageModel", ProjectConstant.MODEL_PACKAGE);
138 data.put("basePackageDao", ProjectConstant.MAPPER_PACKAGE);
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140 File file = new File(JAVA_PATH + PACKAGE_PATH_SERVICE + modelNameUpperCamel + "Service.java");
141 if (!file.getParentFile().exists()) {
142 file.getParentFile().mkdirs();
143 }
144 cfg.getTemplate("service.ftl").process(data, new FileWriter(file));
145 System.out.println(modelNameUpperCamel + "Service.java 生成成功");
146
147 File file1 = new File(JAVA_PATH + PACKAGE_PATH_SERVICE_IMPL + modelNameUpperCamel + "ServiceImpl.java");
148 if (!file1.getParentFile().exists()) {
149 file1.getParentFile().mkdirs();
150 }
151 cfg.getTemplate("service-impl.ftl").process(data, new FileWriter(file1));
152 System.out.println(modelNameUpperCamel + "ServiceImpl.java 生成成功");
153 } catch (Exception e) {
154 throw new RuntimeException("生成Service失败", e);
155 }
156 }
157
158 public static void genController(String tableName) {
159 try {
160 freemarker.template.Configuration cfg = getConfiguration();
161 Map<String, Object> data = new HashMap<>();
162 data.put("date", DATE);
163 data.put("author", AUTHOR);
164 String modelNameUpperCamel = tableNameConvertUpperCamel(tableName);
165 data.put("baseRequestMapping", CaseFormat.UPPER_CAMEL.to(CaseFormat.LOWER_CAMEL, modelNameUpperCamel));
166 data.put("modelNameUpperCamel", modelNameUpperCamel);
167 data.put("modelNameLowerCamel", CaseFormat.UPPER_CAMEL.to(CaseFormat.LOWER_CAMEL, modelNameUpperCamel));
168 data.put("basePackage", ProjectConstant.BASE_PACKAGE);
169 data.put("basePackageController", ProjectConstant.CONTROLLER_PACKAGE);
170 data.put("basePackageService", ProjectConstant.SERVICE_PACKAGE);
171 data.put("basePackageModel", ProjectConstant.MODEL_PACKAGE);
172
173 File file = new File(JAVA_PATH + PACKAGE_PATH_CONTROLLER + modelNameUpperCamel + "Controller.java");
174 if (!file.getParentFile().exists()) {
175 file.getParentFile().mkdirs();
176 }
177 cfg.getTemplate("controller.ftl").process(data, new FileWriter(file));
178
179 System.out.println(modelNameUpperCamel + "Controller.java 生成成功");
180 } catch (Exception e) {
181 throw new RuntimeException("生成Controller失败", e);
182 }
183
184 }
185
186 private static Context getContext() {
187 Context context = new Context(ModelType.FLAT);
188 context.setId("Potato");
189 context.setTargetRuntime("MyBatis3Simple");
190 context.addProperty(PropertyRegistry.CONTEXT_BEGINNING_DELIMITER, "`");
191 context.addProperty(PropertyRegistry.CONTEXT_ENDING_DELIMITER, "`");
192 return context;
193 }
194
195 private static JDBCConnectionConfiguration getJDBCConnectionConfiguration() {
196 JDBCConnectionConfiguration jdbcConnectionConfiguration = new JDBCConnectionConfiguration();
197 jdbcConnectionConfiguration.setConnectionURL(JDBC_URL);
198 jdbcConnectionConfiguration.setUserId(JDBC_USERNAME);
199 jdbcConnectionConfiguration.setPassword(JDBC_PASSWORD);
200 jdbcConnectionConfiguration.setDriverClass(JDBC_DIVER_CLASS_NAME);
201 return jdbcConnectionConfiguration;
202 }
203
204 private static PluginConfiguration getPluginConfiguration() {
205 PluginConfiguration pluginConfiguration = new PluginConfiguration();
206 pluginConfiguration.setConfigurationType("tk.mybatis.mapper.generator.MapperPlugin");
207 pluginConfiguration.addProperty("mappers", ProjectConstant.MAPPER_INTERFACE_REFERENCE);
208 return pluginConfiguration;
209 }
210
211 private static JavaModelGeneratorConfiguration getJavaModelGeneratorConfiguration() {
212 JavaModelGeneratorConfiguration javaModelGeneratorConfiguration = new JavaModelGeneratorConfiguration();
213 javaModelGeneratorConfiguration.setTargetProject(JAVA_PATH);
214 javaModelGeneratorConfiguration.setTargetPackage(ProjectConstant.MODEL_PACKAGE);
215 javaModelGeneratorConfiguration.addProperty("enableSubPackages", "true");
216 javaModelGeneratorConfiguration.addProperty("trimStrings", "true");
217 return javaModelGeneratorConfiguration;
218 }
219
220 private static SqlMapGeneratorConfiguration getSqlMapGeneratorConfiguration() {
221 SqlMapGeneratorConfiguration sqlMapGeneratorConfiguration = new SqlMapGeneratorConfiguration();
222 sqlMapGeneratorConfiguration.setTargetProject(RESOURCES_PATH);
223 sqlMapGeneratorConfiguration.setTargetPackage("mapper");
224 return sqlMapGeneratorConfiguration;
225 }
226
227 private static JavaClientGeneratorConfiguration getJavaClientGeneratorConfiguration() {
228 JavaClientGeneratorConfiguration javaClientGeneratorConfiguration = new JavaClientGeneratorConfiguration();
229 javaClientGeneratorConfiguration.setTargetProject(JAVA_PATH);
230 javaClientGeneratorConfiguration.setTargetPackage(ProjectConstant.MAPPER_PACKAGE);
231 javaClientGeneratorConfiguration.setConfigurationType("XMLMAPPER");
232 return javaClientGeneratorConfiguration;
233 }
234
235 private static freemarker.template.Configuration getConfiguration() throws IOException {
236 freemarker.template.Configuration cfg = new freemarker.template.Configuration(freemarker.template.Configuration.VERSION_2_3_23);
237 cfg.setDirectoryForTemplateLoading(new File(TEMPLATE_FILE_PATH));
238 cfg.setDefaultEncoding("UTF-8");
239 cfg.setTemplateExceptionHandler(TemplateExceptionHandler.IGNORE_HANDLER);
240 return cfg;
241 }
242
243 private static String tableNameConvertUpperCamel(String tableName) {
244 return CaseFormat.LOWER_UNDERSCORE.to(CaseFormat.UPPER_CAMEL, tableName.toLowerCase());
245 }
246
247 private static String packageConvertPath(String packageName) {
248 return String.format("/%s/", packageName.contains(".") ? packageName.replaceAll("\\.", "/") : packageName);
249 }
250}
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四：功能测试
在CodeGenerator中右键run
ok，创建成功
