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准备工作
现在可以来导入所有提供的资源
pojo 及 dao 放到项目对应的路径下：
pojo实体类
package com.myproject.pojo;
public class Department {
private Integer id;
private String departmentName;
public Department() {
}
public Department(int i, String string) {
this.id = i;
this.departmentName = string;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getDepartmentName() {
return departmentName;
}
public void setDepartmentName(String departmentName) {
this.departmentName = departmentName;
}
@Override
public String toString() {
return "Department [id=" + id + ", departmentName=" + departmentName + "]";
}
}
package com.chao.myproject.pojo;
import java.util.Date;
public class Employee {
private Integer id;
private String lastName;
private String email;
//1 male, 0 female
private Integer gender;
private Department department;
private Date birth;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public Integer getGender() {
return gender;
}
public void setGender(Integer gender) {
this.gender = gender;
}
public Department getDepartment() {
return department;
}
public void setDepartment(Department department) {
this.department = department;
}
public Date getBirth() {
return birth;
}
public void setBirth(Date birth) {
this.birth = birth;
}
public Employee(Integer id, String lastName, String email, Integer gender,
Department department) {
super();
this.id = id;
this.lastName = lastName;
this.email = email;
this.gender = gender;
this.department = department;
this.birth = new Date();
}
public Employee() {
}
@Override
public String toString() {
return "Employee{" +
"id=" + id +
", lastName='" + lastName + '\'' +
", email='" + email + '\'' +
", gender=" + gender +
", department=" + department +
", birth=" + birth +
'}';
}
}
dao层
package com.chao.myproject.dao;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import com.kuang.myproject.pojo.Department;
import org.springframework.stereotype.Repository;
@Repository
public class DepartmentDao {
private static Map<Integer, Department> departments = null;
static{
departments = new HashMap<Integer, Department>();
departments.put(101, new Department(101, "D-AA"));
departments.put(102, new Department(102, "D-BB"));
departments.put(103, new Department(103, "D-CC"));
departments.put(104, new Department(104, "D-DD"));
departments.put(105, new Department(105, "D-EE"));
}
public Collection<Department> getDepartments(){
return departments.values();
}
public Department getDepartment(Integer id){
return departments.get(id);
}
}
```java
package com.kuang.myproject.dao;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import com.kuang.myproject.pojo.Department;
import com.kuang.myproject.pojo.Employee;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;
@Repository
public class EmployeeDao {
private static Map<Integer, Employee> employees = null;
@Autowired
private DepartmentDao departmentDao;
static{
employees = new HashMap<Integer, Employee>();
employees.put(1001, new Employee(1001, "E-AA", "[email protected]", 1, new Department(101, "D-AA")));
employees.put(1002, new Employee(1002, "E-BB", "[email protected]", 1, new Department(102, "D-BB")));
employees.put(1003, new Employee(1003, "E-CC", "[email protected]", 0, new Department(103, "D-CC")));
employees.put(1004, new Employee(1004, "E-DD", "[email protected]", 0, new Department(104, "D-DD")));
employees.put(1005, new Employee(1005, "E-EE", "[email protected]", 1, new Department(105, "D-EE")));
}
private static Integer initId = 1006;
public void save(Employee employee){
if(employee.getId() == null){
employee.setId(initId++);
}
employee.setDepartment(departmentDao.getDepartment(employee.getDepartment().getId()));
employees.put(employee.getId(), employee);
}
public Collection<Employee> getAll(){
return employees.values();
}
public Employee get(Integer id){
return employees.get(id);
}
public void delete(Integer id){
employees.remove(id);
}
}
导入完毕这些之后，还需要导入前端页面及静态资源文件
- css，js等放在static文件夹下
- html放在templates文件夹下
准备工作：OK
首页实现
要求一：默认访问首页
方式一：写一个controller实现！
//会解析到templates目录下的index.html页面
@RequestMapping({"/","/index.html"})
public String index(){
return "index";
}
方式二：自己编写MVC的扩展配置
package com.chao.myproject.config;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.ViewControllerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
@Configuration
public class MyMvcConfig implements WebMvcConfigurer {
@Override
public void addViewControllers(ViewControllerRegistry registry) {
registry.addViewController("/").setViewName("index");
registry.addViewController("/index.html").setViewName("index");
}
}
解决了这个问题，还需要解决一个资源导入的问题；
将项目的启动名改掉
server.servlet.context-path=/chao
现在你访问localhost：8080 就不行了，需要访问localhost：8080/chao
为了保证资源导入稳定，建议在所有资源导入时候使用 th:去替换原有的资源路径！
<link href="asserts/css/bootstrap.min.css"
th:href="@{/asserts/css/bootstrap.min.css}" rel="stylesheet">
比如以上这样，无论项目名称如何变化，它都可以自动的寻找，看源代码就可以看出来区别