@RequestMapping(value = "", produces = "application/json")

本文介绍了SpringMVC中如何通过@RequestMapping注解的produces属性来指定返回数据的格式,如JSON或XML,并解释了如何根据请求头中的Accept字段来匹配相应的数据格式。

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@RequestMapping(value = “/produces”, produces = “application/json”):
表示将生产json格式的数据,此时根据请求头中的Accept进行匹配,如请求头“Accept:application/json”时即可匹配;
@RequestMapping(value = “/produces”, produces = “application/xml”):
表示将生产xml格式的数据,此时根据请求头中的Accept进行匹配,如请求头“Accept:application/xml”时即可匹配。
此种方式相对使用@RequestMapping的“headers = “Accept=application/json””更能表明你的目的。
当你有如下Accept头:
①Accept:text/html,application/xml,application/json
将按照如下顺序进行produces的匹配 ①text/html ②application/xml ③application/json
②Accept:application/xml;q=0.5,application/json;q=0.9,text/html
将按照如下顺序进行produces的匹配 ①text/html ②application/json ③application/xml
q参数为媒体类型的质量因子,越大则优先权越高(从0到1)
③Accept:/,text/*,text/html
将按照如下顺序进行produces的匹配 ①text/html ②text/* ③/
即匹配规则为:最明确的优先匹配。

@Controller @RequestMapping(value = "/JzAtlas") @Api(tags = {"建筑--图册--操作接口"}) public class JzAtlasAction { @Resource private JzAtlasService service; @ApiOperation(value = "查询单个项目", notes = "项目主键ID") //@RequestMapping(value = "/findByKey", method = {RequestMethod.GET}, produces = "application/json; charset=UTF-8") @RequestMapping(value = "/findByKey", method = {RequestMethod.GET}) @ResponseBody public Object findByKey(Integer id) { return service.findById(id); } @ApiOperation(value = "保存单个项目信息", notes = "传递数据") @RequestMapping(value = "/save", method = {RequestMethod.POST}) @ResponseBody public Object save(@RequestBody JzAtlas model) { return service.save(model); } @ApiOperation(value = "更新单个项目信息", notes = "传递数据") @RequestMapping(value = "/update", method = {RequestMethod.POST}) @ResponseBody public Object update(@RequestBody JzAtlas model) { return service.update(model); } @ApiOperation(value = "查询所有", notes = "无查询条件") @RequestMapping(value = "/findAllList", method = {RequestMethod.POST}) @ResponseBody public Object findList() { return service.findList(); } @ApiOperation(value = "根据条件查询", notes = "查询参数") @RequestMapping(value = "/findList", method = {RequestMethod.POST}) @ResponseBody public Object findListByQuery(@RequestBody JzAtlasRequest requestModel) { return service.findListByQuery(requestModel); } @ApiOperation(value = "删除单个项目信息", notes = "项目主键ID") @RequestMapping(value = "/delete", method = {RequestMethod.POST}) @ResponseBody public Object delete(Integer id) { return service.delete(id); } }
07-09
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