ajax Post JSON与SpringMVC

1. 配置文件

    <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping" />

    
    <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter">
        <property name="messageConverters">
            <list>
                <ref bean="stringConverter" />
                <ref bean="jsonConverter" />
            list>
        property>
    bean>

    <bean id="stringConverter"
        class="org.springframework.http.converter.StringHttpMessageConverter">
        <property name="supportedMediaTypes" value="text/html;charset=UTF-8"/>
    bean>

    <bean id="jsonConverter"
        class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter">
        <property name="supportedMediaTypes" value="application/json" />
    bean>

2. 客户端javaScript代码

var orderData = {
    bookDate: "2015-11-23",
    siteType: UcConstant.Dojoy.Site.SITE_TYPE_WHOLE,
    siteStatus: UcConstant.Dojoy.Site.SITE_STATUS_OCCUPIED,
    sportType: sportType,
    siteBookingCarts: [{"siteID": 223, "siteName": "1号场地"}],
    totalPrice: 0
};
$.ajax({
    type: "POST",
    url: "site/siteOrderDetail",
    contentType: "application/json",
    data: JSON.stringify(orderData), //JSON.stringify把object对象转换为json格式的字符串
    dataType: "html",
    success: function (html) {
        //handle...
    }
});

3. 服务端代码

@RequestMapping(method = RequestMethod.POST, value = "/siteOrderDetail", headers = { "Accept=application/json;charset=utf-8" })
public String toSiteOrderDetail(@RequestBody SiteUpdateStatusForm siteOrderForm) {
        return "site/site_order_detail.jsp";
}

public class SiteUpdateStatusForm {
    private String bookDate;
    private int siteStatus;
    private int siteType;
    private int sportType;
    private List siteBookingCarts;
    ...
}

public class SiteBookingCart {
    private int siteID;
    private String siteName;
    private int hour;
    ...
}

完毕。

总结：
1. 如果post的数据不加JSON.stringify转换，post数据在传输时是格式这样的：

bookDate=2015-11-23&siteType=0&siteStatus=0&sportType=3&siteBookingCarts%5B0%5D%5BsiteID%5D=338&siteBookingCarts%5B0%5D%5BsiteName%5D=1%E5%8F%B7%E5%9C%BA%E5%9C%B0&siteBookingCarts%5B0%5D%5Bhour%5D=18&siteBookingCarts%5B0%5D%5Bprice%5D=40&siteBookingCarts%5B1%5D%5BsiteID%5D=338&siteBookingCarts%5B1%5D%5BsiteName%5D=1%E5%8F%B7%E5%9C%BA%E5%9C%B0&siteBookingCarts%5B1%5D%5Bhour%5D=19&siteBookingCarts%5B2%5D%5BsiteID%5D=339&siteBookingCarts%5B2%5D%5BsiteName%5D=2%E5%8F%B7%E5%9C%BA%E5%9C%B0&siteBookingCarts%5B2%5D%5Bhour%5D=19&siteBookingCarts%5B3%5D%5BsiteID%5D=339&siteBookingCarts%5B3%5D%5BsiteName%5D=2%E5%8F%B7%E5%9C%BA%E5%9C%B0&siteBookingCarts%5B3%5D%5Bhour%5D=20

那么上述方式会导致服务端解析错误，类似这样：

org.springframework.http.converter.HttpMessageNotReadableException: Could not read JSON: Unexpected character ('b' (code 98)): expected a valid value (number, String, array, object, 'true', 'false' or 'null')

如果使用了JSON.stringify，则数据格式是这样的：

{"bookDate":"2015-11-23","siteType":0,"siteStatus":0,"sportType":3,"siteBookingCarts":[{"siteID":343,"siteName":"6号场地","hour":19},{"siteID":343,"siteName":"6号场地","hour":20},{"siteID":344,"siteName":"7号场地","hour":20}]}