springMVC转换器配置使用

淩亂°似流年 2022-05-22 11:38 203阅读 0赞

一：需求

将页面上的字符串转换为Employee对象

<form action="${pageContext.request.contextPath }/springmvc/testConverter" method="post">
    		
    		Employee : <input type="text" name="employee"/>
    		           <input type="submit"/>
    	</form>

二：转换类的实现，需要实现Converter<S,T>接口

package com.crud.bean;
    
    import java.util.Date;
    
    public class Employee {
    
    	private Integer id;
    
    	private String lastName;
    
    	private String email;
    
    	private int gerder;
    
    	private Department department;
    
    	//get...set...
    }

package com.crud.couverters;
    
    import org.springframework.core.convert.converter.Converter;
    import org.springframework.stereotype.Controller;
    import org.springframework.util.StringUtils;
    
    import com.crud.bean.Department;
    import com.crud.bean.Employee;
    
    @Controller
    public class EmployeeCouverter implements Converter<String, Employee> {
    
    	@Override
    	public Employee convert(String source) {
    		Employee employee = new Employee();
    		if (!StringUtils.isEmpty(source.trim())) {
    			//GG-gg@csii.com-0-105
    			String[] emp = source.split("-");
    			if (emp != null && emp.length == 4) {
    				employee.setLastName(emp[0]);
    				employee.setEmail(emp[1]);
    				employee.setGerder(Integer.parseInt(emp[2]));
    				Department department = new Department();
    				department.setId(Integer.parseInt(emp[3]));
    				employee.setDepartment(department);;
    			}
    		}
    		System.out.println(source + employee);
    		return employee;
    	}
    }

三：转换器配置

springMVC配置文件中的配置

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