spring mvc 参数绑定

基础类型

原始类型：id必须要传，否则报错。

@RequestMapping("/test")

@ResponseBody

public ResponseData test(int id) {}

包装类型：id可以不传，后台接受到null。

@RequestMapping("/test")

@ResponseBody

public ResponseData test(Integer id) {}

list&set

简单类型

前台

form表单

<form action="${ctx}/test/test" method="post">

    <input type="text" name="ids">

    <input type="text" name="ids">

    <input type="text" name="ids">

    <input type="submit">

</form>

ajax

var data = [];

data.push(1);

data.push(2);

data.push(3);

$.ajax({

    url: ctx + "/test/test",

    traditional:true,//必要

    data: {ids: data},

    success: function (result) {

        alert(result);

    }

})

后台

@RequestMapping("/test")

@ResponseBody

public ResponseData test(@RequestParam List<Integer>ids) {}

复杂类型

如list<User>users：（略）同json格式对象

数组

前台

form表单

<form action="${ctx}/test/test" method="post">

    <input type="text" name="ids">

    <input type="text" name="ids">

    <input type="text" name="ids">

    <input type="submit">

</form>

ajax

var data = [];

data.push(1);

data.push(2);

data.push(3);

$.ajax({

    url: ctx + "/test/test",

    traditional:true,//必要

    data: {ids: data},

    success: function (result) {

        alert(result);

    }

})

后台

@RequestMapping("/test")

@ResponseBody

public ResponseData test(Integer[]ids) {

}

map

前台

form

<form action="${ctx}/test/test" method="post">

    <input type="text" name="name">

    <input type="text" name="sex">

    <input type="submit">

</form>

ajax

var data = {name:"zhangsan",sex:"man"};

$.ajax({

    url: ctx + "/test/test",

    data:data,

    success: function (result) {

        alert(result);

    }

});

后台

@RequestMapping("/test")

@ResponseBody

public ResponseData test(@RequestParam Map<String,String> params) {}

pojo简单属性

前台

form

<form action="${ctx}/test/test" method="post">

    <input type="text" name="name">

    <input type="text" name="sex">

    <input type="submit">

</form>

ajax

var data = {name:"zhangsan",sex:"man"};

$.ajax({

    url: ctx + "/test/test",

    data:data,

    success: function (result) {

        alert(result);

    }

});

后台

@RequestMapping("/test")

@ResponseBody

public ResponseData test(User user) {}

public class User{

    private String name;

    private String sex;

    //get and set ...

}

pojo包含list

前台

form

<form action="${ctx}/test/test" method="post">

    <input type="text" name="userName" value="zhangsan">

    <input type="text" name="sex" value="123">

    <input type="text" name="posts[0].code" value="232"/>

    <input type="text" name="posts[0].name" value="ad"/>

    <input type="text" name="posts[1].code" value="ad"/>

    <input type="text" name="posts[1].name" value="232"/>

    <input type="submit">

</form>

ajax

var user={userName:"zhangsan",password:"123"};

user['posts[0].name']="ada";

user['posts[0].code']="ada";

user['posts[1].name']="ad";

user['posts[1].code']="ad2323a";

$.ajax({

    url: ctx + "/test/test",

    type:"post",

    contentType: "application/x-www-form-urlencoded",

    data:user,

    success: function (result) {

        alert(result);

    }

});

后台

public class User{

    private String name;

    private String sex;

    private List<Post> posts;

    //get and set ...

}

public class Post {

    private String code;

    private String name;

    //get and set ...

}

@RequestMapping("/test")

@ResponseBody

public ResponseData test(User user) {}

date类型

使用注解方式

绑定单个方法

对于传递参数为Date类型，可以在参数前添加@DateTimeFormat注解。如下：

@RequestMapping("/test")

public void test(@DateTimeFormat(pattern="yyyy-MM-dd HH:mm:ss") Date date){}

如果传递过来的是对象，可以在对象属性上添加注解。

@RequestMapping("/test")

public void test(Person person){}

Public class Person{

    @DateTimeFormat(pattern="yyyy-MM-dd HH:mm:ss")

    Private Date date;

    Private String name;

}

绑定整个controller的所有方法：

@Controller

public class FormController {

    @InitBinder

    public void initBinder(WebDataBinder binder) {

        SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");

        dateFormat.setLenient(false);

        binder.registerCustomEditor(Date.class, new CustomDateEditor(dateFormat, false));

    }

}

@Controller

public class FormController {

   @InitBinder

    protected void initBinder(WebDataBinder binder) {

        binder.addCustomFormatter(new DateFormatter("yyyy-MM-dd"));

    }

}

使用PropertyEditor方式

使用ConversionService方式

参考：

https://www.2cto.com/kf/201501/374062.html

https://docs.spring.io/spring/docs/current/spring-framework-reference/web.html#mvc-ann-initbinder

枚举类型

mvc配置文件添加：

 <!--枚举类型转化器-->

    <bean id="formattingConversionService"

          class="org.springframework.format.support.FormattingConversionServiceFactoryBean">

        <property name="converters">

            <set>

                <bean class="org.springframework.core.convert.support.StringToEnumConverterFactory"/>

            </set>

        </property>

    </bean>

参考：

Spring Boot绑定枚举类型参数

Spring MVC 自动为对象注入枚举类型

json格式对象

后台

@RequestMapping(value = "introductionData.do", method = {RequestMethod.POST})

@ResponseBody

public RestResult introductionData(@RequestBody SignData signData) {

}

public class SignData {

    private ApplicationInformation applicationInformation;

    private ApplyUserInformation applyUserInformation;

    private StudentInformation studentInformation;

    private List<VolunteerItem> volunteerItems;

    private ResidencePermit residencePermit;

    private List<Family> families;

	//get and set ...

}

前台

var data = {}

var applyUserInformation = {

    "applyName": APPLYNAME,

    "applyCardType": "0",

    "applyCardID": APPLYIDCARD,

    "applyMobile": APPLYMOBILE

};

var applicationInformation = {

    "live_address": nowaddress,

    "addressJZArea": addressJZArea,

    "schoolLevel": schoolLevel,

    "schoolType": schoolType,

    "applyName": APPLYNAME,

    "contacts": contacts,

    "contactNumber": contactNumber

};

var studentInformation = {

    "cardType": cardType,

    "cardID": cardID,

    "studentName": studentName,

    "studentType": studentType,

    "studentType1": studentSpecialCase,

    "isDisability": "0",

    "studentCategory": "0",

    "birthday":birthday,

    "graduationschool":SchoolName,

    "graduationclass":classNameinfo,

    "applyName": APPLYNAME

};

data["applyUserInformation"] = applyUserInformation;

data["applicationInformation"] = applicationInformation;

data["studentInformation"] = studentInformation;

$.ajax({

    url: ctx + '/overseasData.do',

    type: "post",

    data: JSON.stringify(data),

    contentType: "application/json;charset=utf-8",

    success: function (result) {}

})

参考：https://blog.csdn.net/qq_29663071/article/details/68922043

巴特西

spring mvc 参数绑定

基础类型

list&set

前台

form表单

ajax

后台

数组

前台

form表单

ajax

后台

map

前台

form

ajax

后台

pojo简单属性

前台

form

ajax

后台

pojo包含list

date类型

使用注解方式

绑定单个方法

绑定整个controller的所有方法：

使用PropertyEditor方式

使用ConversionService方式

枚举类型

json格式对象

后台

前台

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