Springboot入门笔记8

Department.java

package com.hiss.springboot03web.pojo;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

//部门表
@Data
@AllArgsConstructor
@NoArgsConstructor
public class Department {

    private Integer id;
    private String departmentName;
}

Employee.java

package com.hiss.springboot03web.pojo;

import lombok.Data;
import lombok.NoArgsConstructor;

import java.util.Date;

//员工表
@Data
@NoArgsConstructor
public class Employee {

    private Integer id;
    private String lastName;
    private String email;
    private Integer gender;    //0女1男
    private Department department;
    private Date birth;

    public Employee(Integer id, String lastName, String email, Integer gender, Department department) {
        this.id = id;
        this.lastName = lastName;
        this.email = email;
        this.gender = gender;
        this.department = department;
        this.birth = new Date();     //自动生成默认日期
    }
}

DepartmentDao.java

package com.hiss.springboot03web.dao;

import com.hiss.springboot03web.pojo.Department;
import org.springframework.stereotype.Repository;

import java.util.Collection;
import java.util.HashMap;
import java.util.Map;

//部门dao
@Repository
public class DepartmentDao {

    //模拟数据库中的数据
    private static Map departments = null;

    static {

        //创建一个部门表
        departments = new HashMap();

        departments.put(101,new Department(101,"教学部"));
        departments.put(102,new Department(102,"市场部"));
        departments.put(103,new Department(103,"教研部"));
        departments.put(104,new Department(104,"运营部"));
        departments.put(105,new Department(105,"后勤部"));
    }

    //获得所有部门信息
    public Collection getDepartments(){
        return departments.values();
    }

    //通过id得到部门
    public Department getDepartmentById(Integer id){
        return departments.get(id);
    }
}

EmployeeDao.java

package com.hiss.springboot03web.dao;

import com.hiss.springboot03web.pojo.Department;
import com.hiss.springboot03web.pojo.Employee;
import org.omg.CORBA.PRIVATE_MEMBER;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;

import java.util.Collection;
import java.util.HashMap;
import java.util.Map;

//员工Dao
@Repository
public class EmployeeDao {

    //模拟数据库中的数据
    private static Map employees = null;

    //员工有所属的部门
    @Autowired
    private DepartmentDao departmentDao;
    static {

        //创建一个部门表
        employees = new HashMap();

        employees.put(1001,new Employee(1001,"AA","A2265821702@qq.com",0,new Department(101,"教学部")));
        employees.put(1002,new Employee(1002,"BB","B2265821702@qq.com",1,new Department(101,"市场部")));
        employees.put(1003,new Employee(1003,"CC","C2265821702@qq.com",0,new Department(101,"教研部")));
        employees.put(1004,new Employee(1004,"DD","D2265821702@qq.com",1,new Department(101,"运营部")));
        employees.put(1005,new Employee(1005,"EE","E2265821702@qq.com",0,new Department(101,"后勤部")));
    }

    //主键自增
    private static Integer initId = 1006;
    //添加一个员工
    private void save(Employee employee){
        if (employee.getId()==null){
            employee.setId(initId++);
        }

        employee.setDepartment(departmentDao.getDepartmentById(employee.getDepartment().getId()));

        employees.put(employee.getId(),employee);
    }

    //查询员工全部信息
    public Collection getAll(){
        return employees.values();
    }

    //通过Id查询员工
    public Employee getEmployeeById(Integer id){
        return employees.get(id);
    }

    //通过id删除员工
    public void delete(Integer id){
        employees.remove(id);
    }
}

自定义扩展springmvc：
MyMvcConfig.java

package com.hiss.springboot03web.config;

import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.ViewControllerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

@Configuration    //让这个类变成配置类
public class MyMvcConfig  implements WebMvcConfigurer {

    @Override
    public void addViewControllers(ViewControllerRegistry registry) {
        registry.addViewController("/").setViewName("index");
        registry.addViewController("/index.html").setViewName("index");
    }
}

此时首页如下：

此时静态资源没有加载进来 我们要根据thymeleaf模板引擎要求把index.html更改成thymeleaf所支持的东西
thymeleaf语法见Springboot入门笔记6


关闭模板引擎缓存

首页如下：

404.html

dashboard.html

list.html

但是如404页面中的这种在线链接是无需更改的

首先保证编码是utf-8

新建i18n目录

对应index页面将需要国际化的元素配置好（Resource Bundle：可视化配置）

绑定配置文件

更改国际化的格式

首页如下：

根据按钮自动切换中文英文：
在Spring中有一个国际化的Locale(区域信息对象)里面有一个叫做LocaleResolver(获取区域信息对象)的解析器
想点击链接让国际化资源生效，就需要让自己的Locale生效。写一个自己的LocaleResolver，在链接上携带区域信息

MyLocaleResolver.java

package com.hiss.springboot03web.config;

import org.springframework.web.servlet.LocaleResolver;
import org.thymeleaf.util.StringUtils;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.Locale;

//可以在链接上携带区域信息
public class MyLocaleResolver implements LocaleResolver {

    //解析请求
    @Override
    public Locale resolveLocale(HttpServletRequest request) {

        String language = request.getParameter("l");
        Locale locale = Locale.getDefault(); // 如果没有获取到就使用系统默认的
        //如果请求链接不为空
        if (!StringUtils.isEmpty(language)){
            //分割请求参数
            String[] split = language.split("_");
            //国家，地区
            locale = new Locale(split[0],split[1]);
        }
        return locale;
    }

    @Override
    public void setLocale(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Locale locale) {

    }
}

配置 使自定义的国际化组件生效：
MyMvcConfig.java

    //自定义的国际化组件
    @Bean
    public LocaleResolver localeResolver(){
        return new MyLocaleResolver();
    }

效果如下：

                                                                      参考资料：狂神说