spring boot 代码自动生成器
2018-10-25 本文已影响1022人
戒烟人
本例,可根据数据库表名,表结构自动生成controller,service,model,dao,mapper.xml ,减少了程序员们的重复劳动,你是不是最烦每次写新模块的时候,新建一个controller ，service然后把 简单的增删改查 业务重复的写一边？只是表名不一样而已,其他的逻辑几乎一模一样,重复到想吐,这位同学(敲黑板!!!),你找到组织了,当你看到这片文章的时候你的问题就解决了,废话不多说,开始:
1 准备工具
1 IDEA (随便哪个版本都可以)
2 mybatis-generator(含一对多,一对一插件,密码:pntd)
4 jdk 1.8 环境
5 mysql数据库
2 开始
1 创建一个spring boot 工程 添加勾选 web,mysql,mybatis 依赖
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点击next
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注: 可能有的同学会卡到这个界面 一直在resolving ,这时候 点击左上角file->close project,在进来,刷新下maven 依赖 就可以了,如下图:
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2 添加maven 的pom依赖
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.ytx</groupId>
<artifactId>store</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<properties>
<java.version>1.8</java.version>
</properties>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.10.RELEASE</version>
</parent>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-configuration-processor</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>commons-codec</groupId>
<artifactId>commons-codec</artifactId>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.6</version>
</dependency>
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>23.0</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.3.2</version>
</dependency>
<dependency>
<groupId>tk.mybatis</groupId>
<artifactId>mapper-spring-boot-starter</artifactId>
<version>1.1.4</version>
</dependency>
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper-spring-boot-starter</artifactId>
<version>1.2.2</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.44</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid-spring-boot-starter</artifactId>
<version>1.1.6</version>
</dependency>
<dependency>
<groupId>org.freemarker</groupId>
<artifactId>freemarker</artifactId>
<version>2.3.23</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-core</artifactId>
<version>1.3.5</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>dom4j</groupId>
<artifactId>dom4j</artifactId>
<version>1.6.1</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
<dependency>
<groupId>cn.hutool</groupId>
<artifactId>hutool-all</artifactId>
<version>4.1.1</version>
</dependency>
<dependency>
<groupId>cn.jpush.api</groupId>
<artifactId>jpush-client</artifactId>
<version>3.3.7</version>
</dependency>
<dependency>
<groupId>io.jsonwebtoken</groupId>
<artifactId>jjwt</artifactId>
<version>0.6.0</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>${java.version}</source>
<target>${java.version}</target>
<encoding>UTF-8</encoding>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-archetype-plugin</artifactId>
<version>2.2</version>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>aliyun-repos</id>
<url>http://maven.aliyun.com/nexus/content/groups/public/</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>aliyun-plugin</id>
<url>http://maven.aliyun.com/nexus/content/groups/public/</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</pluginRepository>
</pluginRepositories>
</project>
2 在src/main/java/com.generator下创建 core 目录 并拷贝一下代码到目录中:
/**
* 项目常量
*/
public final class ProjectConstant {
public static final String BASE_PACKAGE = "com.generator";//项目基础包名称，根据自己公司的项目修改
public static final String MODEL_PACKAGE = BASE_PACKAGE + ".model";//Model所在包
public static final String MAPPER_PACKAGE = BASE_PACKAGE + ".dao";//Mapper所在包
public static final String SERVICE_PACKAGE = BASE_PACKAGE + ".service";//Service所在包
public static final String SERVICE_IMPL_PACKAGE = SERVICE_PACKAGE + ".impl";//ServiceImpl所在包
public static final String CONTROLLER_PACKAGE = BASE_PACKAGE + ".web";//Controller所在包
public static final String INPUT_PACKAGE=BASE_PACKAGE+".input";//input 所在包
public static final String MAPPER_INTERFACE_REFERENCE = BASE_PACKAGE + ".core.Mapper";//Mapper插件基础接口的完全限定名
}
此类定义生成的 包的名字
3 在src/test/java 下创建 CodeGenerator类
/**
* 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。
*/
public class CodeGenerator {
//JDBC配置，请修改为你项目的实际配置
private static final String JDBC_URL = "jdbc:mysql://localhost:3306/ytx";
private static final String JDBC_USERNAME = "root";
private static final String JDBC_PASSWORD = "root";
private static final String JDBC_DIVER_CLASS_NAME = "com.mysql.jdbc.Driver";
private static final String PROJECT_PATH = System.getProperty("user.dir");//项目在硬盘上的基础路径
private static final String TEMPLATE_FILE_PATH = PROJECT_PATH + "/src/test/resources/generator/template";//模板位置
private static final String JAVA_PATH = "/src/main/java"; //java文件路径
private static final String RESOURCES_PATH = "/src/main/resources";//资源文件路径
private static final String PACKAGE_PATH_SERVICE = packageConvertPath(SERVICE_PACKAGE);//生成的Service存放路径
private static final String PACKAGE_PATH_SERVICE_IMPL = packageConvertPath(SERVICE_IMPL_PACKAGE);//生成的Service实现存放路径
private static final String PACKAGE_PATH_CONTROLLER = packageConvertPath(CONTROLLER_PACKAGE);//生成的Controller存放路径
private static final String PACKAGE_PATH_INPUT = packageConvertPath(INPUT_PACKAGE);//生成的Input存放路径
private static final String AUTHOR = "zjz";//@author
private static final String DATE = new SimpleDateFormat("yyyy/MM/dd").format(new Date());//@date
public static void main(String[] args) {
genCode("admin_user");//管理员用户表
//genCode("user");
genCode("role");//角色表
genCode("menu");//菜单表
genCode("role_menu");//角色—菜单表
genCode("sys_dict");//字典表
//genCodeByCustomModelName("输入表名","输入自定义Model名称");
}
/**
* 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 TUserDetail、TUserDetailMapper、TUserDetailService ...
* @param tableNames 数据表名称...
*/
public static void genCode(String... tableNames) {
for (String tableName : tableNames) {
String modelName=tableNameConvertUpperCamel(tableName);
genCodeByCustomModelName(tableName, modelName);
}
}
/**
* 通过数据表名称，和自定义的 Model 名称生成代码
* 如输入表名称 "t_user_detail" 和自定义的 Model 名称 "User" 将生成 User、UserMapper、UserService ...
* @param tableName 数据表名称
* @param modelName 自定义的 Model 名称
*/
public static void genCodeByCustomModelName(String tableName, String modelName) {
//genModelAndMapper(tableName, modelName);
genService(tableName, modelName);
genController(tableName, modelName);
genInput(tableName,modelName);
// genModelAndMapper();
}
/**
* 自动生成model和mapper
* @param tableName
* @param modelName
*/
public static void genModelAndMapper(String tableName, String modelName) {
Context context = new Context(ModelType.FLAT);
context.setId("Potato");
context.setTargetRuntime("MyBatis3Simple");
context.addProperty(PropertyRegistry.CONTEXT_BEGINNING_DELIMITER, "`");
context.addProperty(PropertyRegistry.CONTEXT_ENDING_DELIMITER, "`");
JDBCConnectionConfiguration jdbcConnectionConfiguration = new JDBCConnectionConfiguration();
jdbcConnectionConfiguration.setConnectionURL(JDBC_URL);
jdbcConnectionConfiguration.setUserId(JDBC_USERNAME);
jdbcConnectionConfiguration.setPassword(JDBC_PASSWORD);
jdbcConnectionConfiguration.setDriverClass(JDBC_DIVER_CLASS_NAME);
context.setJdbcConnectionConfiguration(jdbcConnectionConfiguration);
PluginConfiguration pluginConfiguration = new PluginConfiguration();
pluginConfiguration.setConfigurationType("tk.mybatis.mapper.generator.MapperPlugin");
pluginConfiguration.addProperty("mappers", MAPPER_INTERFACE_REFERENCE);
pluginConfiguration.setConfigurationType("");
context.addPluginConfiguration(pluginConfiguration);
JavaModelGeneratorConfiguration javaModelGeneratorConfiguration = new JavaModelGeneratorConfiguration();
javaModelGeneratorConfiguration.setTargetProject(PROJECT_PATH + JAVA_PATH);
javaModelGeneratorConfiguration.setTargetPackage(MODEL_PACKAGE);
context.setJavaModelGeneratorConfiguration(javaModelGeneratorConfiguration);
SqlMapGeneratorConfiguration sqlMapGeneratorConfiguration = new SqlMapGeneratorConfiguration();
sqlMapGeneratorConfiguration.setTargetProject(PROJECT_PATH + RESOURCES_PATH);
sqlMapGeneratorConfiguration.setTargetPackage("mapper");
context.setSqlMapGeneratorConfiguration(sqlMapGeneratorConfiguration);
JavaClientGeneratorConfiguration javaClientGeneratorConfiguration = new JavaClientGeneratorConfiguration();
javaClientGeneratorConfiguration.setTargetProject(PROJECT_PATH + JAVA_PATH);
javaClientGeneratorConfiguration.setTargetPackage(MAPPER_PACKAGE);
javaClientGeneratorConfiguration.setConfigurationType("XMLMAPPER");
context.setJavaClientGeneratorConfiguration(javaClientGeneratorConfiguration);
TableConfiguration tableConfiguration = new TableConfiguration(context);
tableConfiguration.setTableName(tableName);
if (StringUtils.isNotEmpty(modelName)){
tableConfiguration.setDomainObjectName(modelName);
}
tableConfiguration.setGeneratedKey(new GeneratedKey("id", "Mysql", true, null));
tableConfiguration.setCountByExampleStatementEnabled(true);//通过example 计数
tableConfiguration.setUpdateByExampleStatementEnabled(true);//通过example 修改
tableConfiguration.setDeleteByExampleStatementEnabled(true);//通过example 删除
tableConfiguration.setSelectByExampleStatementEnabled(true);//通过example 查找
context.addTableConfiguration(tableConfiguration);
List<String> warnings;
MyBatisGenerator generator;
try {
Configuration config = new Configuration();
config.addContext(context);
config.validate();
boolean overwrite = true;
DefaultShellCallback callback = new DefaultShellCallback(overwrite);
warnings = new ArrayList<String>();
generator = new MyBatisGenerator(config, callback, warnings);
generator.generate(null);
} catch (Exception e) {
throw new RuntimeException("生成Model和Mapper失败", e);
}
if (generator.getGeneratedJavaFiles().isEmpty() || generator.getGeneratedXmlFiles().isEmpty()) {
throw new RuntimeException("生成Model和Mapper失败：" + warnings);
}
if (StringUtils.isEmpty(modelName)) modelName = tableNameConvertUpperCamel(tableName);
System.out.println(modelName + ".java 生成成功");
System.out.println(modelName + "Mapper.java 生成成功");
System.out.println(modelName + "Mapper.xml 生成成功");
}
/**
* 自动生成service
* @param tableName
* @param modelName
*/
public static void genService(String tableName, String modelName) {
try {
freemarker.template.Configuration cfg = getConfiguration();
Map<String, Object> data = new HashMap<>();
data.put("date", DATE);
data.put("author", AUTHOR);
String modelNameUpperCamel = StringUtils.isEmpty(modelName) ? tableNameConvertUpperCamel(tableName) : modelName;
data.put("modelNameUpperCamel", modelNameUpperCamel);
data.put("modelNameLowerCamel", tableNameConvertLowerCamel(tableName));
data.put("basePackage", BASE_PACKAGE);
File file = new File(PROJECT_PATH + JAVA_PATH + PACKAGE_PATH_SERVICE + modelNameUpperCamel + "Service.java");
if (!file.getParentFile().exists()) {
file.getParentFile().mkdirs();
}
cfg.getTemplate("p-service.ftl").process(data,
new FileWriter(file));
System.out.println(modelNameUpperCamel + "Service.java 生成成功");
File file1 = new File(PROJECT_PATH + JAVA_PATH + PACKAGE_PATH_SERVICE_IMPL + modelNameUpperCamel + "ServiceImpl.java");
if (!file1.getParentFile().exists()) {
file1.getParentFile().mkdirs();
}
cfg.getTemplate("p-service-impl.ftl").process(data,
new FileWriter(file1));
System.out.println(modelNameUpperCamel + "ServiceImpl.java 生成成功");
} catch (Exception e) {
throw new RuntimeException("生成Service失败", e);
}
}
/**
* 自动生成controller
* @param tableName
* @param modelName
*/
public static void genController(String tableName, String modelName) {
try {
freemarker.template.Configuration cfg = getConfiguration();
Map<String, Object> data = new HashMap<>();
data.put("date", DATE);
data.put("author", AUTHOR);
String modelNameUpperCamel = StringUtils.isEmpty(modelName) ? tableNameConvertUpperCamel(tableName) : modelName;
data.put("baseRequestMapping", modelNameConvertMappingPath(modelNameUpperCamel));
data.put("modelNameUpperCamel", modelNameUpperCamel);
data.put("modelNameLowerCamel", CaseFormat.UPPER_CAMEL.to(CaseFormat.LOWER_CAMEL, modelNameUpperCamel));
data.put("basePackage", BASE_PACKAGE);
File file = new File(PROJECT_PATH + JAVA_PATH + PACKAGE_PATH_CONTROLLER + modelNameUpperCamel + "Controller.java");
if (!file.getParentFile().exists()) {
file.getParentFile().mkdirs();
}
//cfg.getTemplate("controller-restful.ftl").process(data, new FileWriter(file));
cfg.getTemplate("p-controller.ftl").process(data, new FileWriter(file));
System.out.println(modelNameUpperCamel + "Controller.java 生成成功");
} catch (Exception e) {
throw new RuntimeException("生成Controller失败", e);
}
}
/**
* 自动生成input对象
* @param tableName
* @param modelName
*/
public static void genInput(String tableName, String modelName) {
try {
freemarker.template.Configuration cfg = getConfiguration();
Map<String, Object> data = new HashMap<>();
data.put("date", DATE);
data.put("author", AUTHOR);
String modelNameUpperCamel = StringUtils.isEmpty(modelName) ? tableNameConvertUpperCamel(tableName) : modelName;
//data.put("baseRequestMapping", modelNameConvertMappingPath(modelNameUpperCamel));
data.put("modelNameUpperCamel", modelNameUpperCamel);
//data.put("modelNameLowerCamel", CaseFormat.UPPER_CAMEL.to(CaseFormat.LOWER_CAMEL, modelNameUpperCamel));
data.put("basePackage", BASE_PACKAGE);
File file = new File(PROJECT_PATH + JAVA_PATH + PACKAGE_PATH_INPUT + modelNameUpperCamel + "Input.java");
if (!file.getParentFile().exists()) {
file.getParentFile().mkdirs();
}
//cfg.getTemplate("controller-restful.ftl").process(data, new FileWriter(file));
cfg.getTemplate("input.ftl").process(data, new FileWriter(file));
System.out.println(modelNameUpperCamel + "Input.java 生成成功");
} catch (Exception e) {
throw new RuntimeException("生成Input失败", e);
}
}
private static freemarker.template.Configuration getConfiguration() throws IOException {
freemarker.template.Configuration cfg = new freemarker.template.Configuration(freemarker.template.Configuration.VERSION_2_3_23);
cfg.setDirectoryForTemplateLoading(new File(TEMPLATE_FILE_PATH));
cfg.setDefaultEncoding("UTF-8");
cfg.setTemplateExceptionHandler(TemplateExceptionHandler.IGNORE_HANDLER);
return cfg;
}
private static String tableNameConvertLowerCamel(String tableName) {
return CaseFormat.LOWER_UNDERSCORE.to(CaseFormat.LOWER_CAMEL, tableName.toLowerCase());
}
private static String tableNameConvertUpperCamel(String tableName) {
return CaseFormat.LOWER_UNDERSCORE.to(CaseFormat.UPPER_CAMEL, tableName.toLowerCase());
}
private static String tableNameConvertMappingPath(String tableName) {
tableName = tableName.toLowerCase();//兼容使用大写的表名
//return "/" + (tableName.contains("_") ? tableName.replaceAll("_", "/") : tableName);
return "/"+tableName;
}
private static String modelNameConvertMappingPath(String modelName) {
String tableName = CaseFormat.UPPER_CAMEL.to(CaseFormat.LOWER_UNDERSCORE, modelName);
return tableNameConvertMappingPath(tableName);
}
private static String packageConvertPath(String packageName) {
return String.format("/%s/", packageName.contains(".") ? packageName.replaceAll("\\.", "/") : packageName);
}
}
此类为 代码自动生成器的主函数,配置说明:
JDBC_URL ：数据库链接配置
JDBC_USERNAME: 数据库账户名
JDBC_PASSWORD: 数据库密码
只需要配置这三项为你自己数据库的参数即可, 其他暂时不需要管
4 在src/test目录下新建文件目录 resources
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5 配置resources 为资源目录(右键resources)
image.png
6 在resources 目录下新建 模版包 generator.template
image.png
7 将准备工作中的 模版文件下载下来并放置在此目录
image.png
注:这三个模版分别为 生成input(输入参数),controller service接口 和serviceImpl 实现类的三个模版 如果需要可自行扩展
8 将准备工作中的mybatis-generator 文件下载下来解压后放到工程的根目录
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9 打开generator.xml 并编辑
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10 配置要生成的表
假设你的数据 表是这样的:
image.png
admin_user 为管理用户表
menu 为菜单表
role为角色表
role_menu 为角色-菜单 关联表
sys_dict 为字典表
admin_user 与role 为 1对1 的关系
role与role_menu 为1 对多关系
role_menu与menu 为1对1关系
根据你自己的情况生成1对1 和 1 对多的关系映射
image.png
如果不是很清楚怎么配置 可移步到
https://blog.csdn.net/bandaotixiruiqiang/article/details/72478361
进行查看,这里不做太多说明
10 打开idea 的终端
image.png
输入命令
java -jar mybatis.jar -configfile generator.xml -overwrite
敲击回车 然后model，dao,和xml就自动生成了
image.png
(是不是有点小激动？别急高潮还没到,到了我会叫的)
接下来我们来生成controller 和 service
1 在src/main/java/com/generator/core 目录中添加Result类
public class Result<T> {
private Integer code;
private String msg;
private T data;
public Integer getCode() {
return code;
}
public void setCode(Integer code) {
this.code = code;
}
public String getMsg() {
return msg;
}
public void setMsg(String msg) {
this.msg = msg;
}
public T getData() {
return data;
}
public void setData(T data) {
this.data = data;
}
}
2 在src/main/java/com.generator 下添加util 目录并在目录中添加ResultUtil 工具类
public class ResultUtil {
public static Result success(Object object){
Result result = new Result();
result.setCode(0);
result.setData(object);
result.setMsg("成功");
return result;
}
public static Result success(){
return success(null);
}
public static Result error(Integer code,String msg){
Result result = new Result();
result.setCode(code);
result.setMsg(msg);
return result;
}
}
3 添加统一异常处理
在src/main/java/com.generator 下添加 enums 目录并添加 YTXExceptionType 异常类枚举(名字可自行定义)
image.png
public enum YTXExceptionType {//错误类定义
CAN_NOT_FIND_VALID_CODE(-1,"未找到验证码"),
MOBILE_INCORRECTNESS(-2,"手机号不正确"),
VALID_CODE_INCORRECTNESS(-3,"验证码不正确"),
USER_UNKNOWN(-4,"未知用户"),
USER_INCORRECT_PASSWORD(-5,"密码不正确"),
USER_ALREADY_EXIST(-6,"用户已存在"),
DELETE_FAIL(-7,"删除失败,id不正确"),
ROLE_ALREADY_EXIST(-8,"角色code已存在"),
ROLE_HAS_ADMIN_USER(-9,"当前角色下含有用户无法删除"),
ROLE_NOT_FOUND(-10,"角色不存在"),
MENU_ALREADY_EXIST(-11,"菜单code已存在"),
MENU_DELETE_HAS_SUB(-12,"菜单包含子菜单,请先删除子菜单"),
MENU_NOT_FOUND(-13,"菜单id不存在"),
ROLE_MENU_ALREADY_EXIST(-14,"当前角色已存在该菜单")
;
private Integer code;
private String msg;
YTXExceptionType(Integer code, String msg){
this.code=code;
this.msg=msg;
}
public Integer getCode() {
return code;
}
public String getMsg() {
return msg;
}
}
在src/main/java/com.generator 下 添加 exception目录 并添加业务异常类
image.png
public class YTXException extends RuntimeException {
private Integer code;
public YTXException(YTXExceptionType exceptionType){
super(exceptionType.getMsg());
this.code=exceptionType.getCode();
}
public YTXException(Integer code, String msg){
super(msg);
this.code = code;
}
public YTXException(YTXExceptionType exceptionType, String msg){
super(msg);
this.code = exceptionType.getCode();
}
public Integer getCode() {
return code;
}
public void setCode(Integer code) {
this.code = code;
}
}
在src/main/java/com.generator 下添加目录 handle 并 添加YTXExceptionHandler 异常处理类(名字可自定义)
image.png
@ControllerAdvice
public class YTXExceptionHandler {
private static final Logger logger = LoggerFactory.getLogger(YTXExceptionHandler.class);
@ExceptionHandler(value = Exception.class)
@ResponseBody
public Result handle(Exception e){
e.printStackTrace();
if(e instanceof YTXException){//业务异常
YTXException ytxException=(YTXException) e;
return ResultUtil.error(ytxException.getCode(),ytxException.getMessage());
}else if(e instanceof BindException){//参数传入异常
BindException exception=(BindException)e;
return ResultUtil.error(-99,
"参数:["+exception.getFieldError().getField()+"]错误," +exception.getFieldError().getDefaultMessage());
}else if(e instanceof MethodArgumentNotValidException){//参数传入异常
MethodArgumentNotValidException exception=(MethodArgumentNotValidException)e;
BindingResult result=exception.getBindingResult();
return ResultUtil.error(-99,
"参数:["+result.getFieldError().getField()+"]错误," +result.getFieldError().getDefaultMessage());
} else if(e instanceof NoHandlerFoundException) {
String url=((NoHandlerFoundException) e).getRequestURL();
return ResultUtil.error(-99,"未知的接口:"+url);
} else if(e instanceof HttpRequestMethodNotSupportedException) {
String method=((HttpRequestMethodNotSupportedException) e).getMethod();
return ResultUtil.error(-99,"请求方式不正确:"+method);
} else {
logger.error("[系统异常]",e.getMessage());
return ResultUtil.error(-1,"[系统异常]");
}
}
}
好了 墨迹半天终于到了激动人心的时刻了～～～开始生成我们的控制层代码
打开CodeGenerator
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找到main方法,调用genCode() 传入你的表名 点击左边箭头开始生成
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查看下方日志
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成功！！
当当当当～～oh～～no～～oh～～yes～～终于生成了我们的代码
image.png
让我们看下controller
image.png
增删 改查 一个不少
在看下service
image.png
实现类:
image.png
input 为 定义的常态输入类 内置了 分页参数 和 关键字参数 可根据你自己的需要进行扩展
image.png
终于可以向无聊的重复劳动 说88了～～～喜欢的 点个赞吧～～谢谢
