Java --- springMVC实现RESTFul案例

一、使用springMVC实现RESTFul小案例

1.1、项目目录图：

 1.2、代码实现：

pom.xml文件：

    war
    
    
        
        
            org.springframework
            spring-webmvc
            5.3.1
        
        
        
            ch.qos.logback
            logback-classic
            1.2.3
        
        
        
            javax.servlet
            javax.servlet-api
            3.1.0
            provided
        
        
            org.thymeleaf
            thymeleaf-spring5
            3.0.12.RELEASE
        
        
            org.projectlombok
            lombok
            1.18.10
        
    

web.xml文件：

    
        CharacterEncodingFilter
        org.springframework.web.filter.CharacterEncodingFilter
        
            encoding
            UTF-8
        
        
            forceResponseEncoding
            true
        
    
    
        CharacterEncodingFilter
        /*
    
    
    
        HiddenHttpMethodFilter
        org.springframework.web.filter.HiddenHttpMethodFilter
    
    
        HiddenHttpMethodFilter
        /*
    

    
        DispatcherServlet
        org.springframework.web.servlet.DispatcherServlet
        
            contextConfigLocation
            classpath:SpringMVC.xml
        
        1
    
    
        DispatcherServlet
        /
    

SpringMVC.xml文件：

EmployeeController类

@Controller
public class EmployeeController {
     @Autowired
     private EmployeeDao employeeDao;
     @GetMapping("/getAllEmployee")
     public String getAllEmployee(Model model){
          Collection employees = employeeDao.getAll();
          model.addAttribute("employees",employees);
          return "employeeList";
     }
     @DeleteMapping("/deleteEmployee/{id}")
     public String deleteEmployee(@PathVariable("id") Integer id){
          employeeDao.delete(id);
          return "redirect:/getAllEmployee";
     }
     @PostMapping("/addEmployee")
     public String addEmployee(Employee employee){
          employeeDao.save(employee);
          return "redirect:/getAllEmployee";
     }
     @GetMapping("/getEmployeeById/{id}")
     public String getEmployeeById(@PathVariable("id") Integer id,Model model){
          Employee employee = employeeDao.get(id);
          model.addAttribute("employee",employee);
          return "employeeUpdate";
     }
     @PutMapping("/updateEmployee")
     public String updateEmployee(Employee employee){
          employeeDao.save(employee);
          return "redirect:/getAllEmployee";
     }
}

EmployeeDao类：

@Repository
public class EmployeeDao {
    private static Map employeeMap = null;
    static {
        employeeMap = new HashMap();
        employeeMap.put(1001,new Employee(1001,"老王","[email protected]",1));
        employeeMap.put(1002,new Employee(1002,"老李","[email protected]",1));
        employeeMap.put(1003,new Employee(1003,"老赵","[email protected]",0));
        employeeMap.put(1004,new Employee(1003,"老秦","[email protected]",0));
        employeeMap.put(1005,new Employee(1003,"老头","[email protected]",0));
        }
        private static Integer initId = 1006;
    public void save(Employee employee){
        if (employee.getId() == null){
            employee.setId(initId++);
        }
        employeeMap.put(employee.getId(),employee);
    }
    public Collection getAll(){
        return employeeMap.values();
    }
    public Employee get(Integer id){
        return employeeMap.get(id);
    }
    public void delete(Integer id){
        employeeMap.remove(id);
    }
}

Employee类：

@AllArgsConstructor
@NoArgsConstructor
@Data
public class Employee {
    private Integer id;
    private String name;
    private String email;
    private Integer gender;
}

employeeAdd.html

    
    



    name:

    email:

    gender:male
    female

    

employeeList.html:

    

        
Employee Info
    
    

        
id
        
name
        
email
        
gender
        
options(add)
    
    

        

        

        

        

        

            delete
            update
        
    


    

employeeUpdate.html

    
    



    
    
    name:

    email:

    gender:male
    female

    

 index.html

    
    


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