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  • ssm的自动类型转换器

    1.jsp页面将String 转换成employee类型
    <form action="testConversionServiceConverer" method="POST">
    <!-- lastname-email-gender-department.id 例如: GG-gg@atguigu.com-0-105 -->
    Employee: <input type="text" name="employee"/>
    <input type="submit" value="Submit"/>
    </form>

    2。手写转换器类

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

    @Override
    public Employee convert(String source) {
    if(source != null){
    String [] vals = source.split("-");
    //GG-gg@atguigu.com-0-105
    if(vals != null && vals.length == 4){
    String lastName = vals[0];
    String email = vals[1];
    Integer gender = Integer.parseInt(vals[2]);
    Department department = new Department();
    department.setId(Integer.parseInt(vals[3]));

    Employee employee = new Employee(null, lastName, email, gender, department);
    System.out.println(source + "--convert--" + employee);
    return employee;
    }
    }
    return null;
    }

    }

    3.在springMvc.xml里进行配置

    <mvc:annotation-driven conversion-service="conversionService"></mvc:annotation-driven>

    <!-- 配置 ConversionService -->
    <bean id="conversionService"
    class="org.springframework.format.support.FormattingConversionServiceFactoryBean">
    <property name="converters">
    <set>
    <ref bean="employeeConverter"/>
    </set>
    </property>
    </bean>

    4配置action 


    @RequestMapping("/testConversionServiceConverer")
    public String testConverter(@RequestParam("employee") Employee employee){
    System.out.println("save: " + employee);
    employeeDao.save(employee);
    return "redirect:/emps";
    }

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  • 原文地址:https://www.cnblogs.com/zhangzhiqin/p/8489127.html
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