SpringMVC实现自定义类型转换器

<mvc:annotation-driven />

package com.proc;

public class Employee {

  private String name;
  private Integer age;
  private String gender;
  public String getName() {
    return name;
  }
  public void setName(String name) {
    this.name = name;
  }
  public Integer getAge() {
    return age;
  }
  public void setAge(Integer age) {
    this.age = age;
  }
  public String getGender() {
    return gender;
  }
  public void setGender(String gender) {
    this.gender = gender;
  }
  @Override
  public String toString() {
    return "Employee [name=" + name + ", age=" + age + ", gender=" + gender
        + "]";
  }
  
}

package com.proc;

import org.springframework.core.convert.converter.Converter;
import org.springframework.stereotype.Component;

@Component
public class EmployeeConverter implements Converter<String, Employee> {

  @Override
  public Employee convert(String str) {
    Employee emp=null;
    //字符串格式 name-age-gender
    if(str!=null && str.split("-").length==3){
      emp=new Employee();
      String[] arr=str.split("-");
      emp.setName(arr[0]);
      emp.setAge(Integer.parseInt(arr[1]));
      emp.setGender(arr[2]);
    }
    return emp;
  }
}

package com.proc;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;

@Controller
public class EmployeeController {

  @RequestMapping("/add")
  public String add(@RequestParam("employee") Employee employee){
    System.out.println(employee);
    return "add";
  }
}

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xmlns:context="http://www.springframework.org/schema/context"
  xmlns:mvc="http://www.springframework.org/schema/mvc"
  xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
    http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd"> 
  
  <context:component-scan base-package="com.proc"></context:component-scan>
  
  <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <property name="prefix" value="/WEB-INF/"/>
    <property name="suffix" value=".jsp"></property>
  </bean>

    <mvc:annotation-driven conversion-service="conversionService"/>
    
    <bean id="conversionService" class="org.springframework.context.support.ConversionServiceFactoryBean">
      <property name="converters">
        <set>
          <ref bean="employeeConverter"/>
        </set>
      </property>
    </bean>
</beans>