SpringBoot中的内容协商器图解

  public abstract class AbstractRestController {
    protected Class voClazz;
    @Autowired
    private Service service;
    public AbstractRestController() {
      TypeToken voType = new TypeToken(getClass()) {
      };
      voClazz = (Class) voType.getRawType();
    }
    @PostMapping()
    @ApiOperation(value = "新建实体", notes = "")
    public Result add(@RequestBody V vo) {
      service.saveSelective(vo);
      return ResultGenerator.genSuccessResult();
    }
    @DeleteMapping("/{id}")
    @ApiOperation(value = "删除实体", notes = "")
    public Result delete(@PathVariable PK id) {
      service.deleteById(id);
      return ResultGenerator.genSuccessResult();
    }
    @PutMapping
    @ApiOperation(value = "更新实体", notes = "")
    public Result update(@RequestBody V vo) {
      service.updateByPrimaryKeySelective(vo);
      return ResultGenerator.genSuccessResult();
    }
    @GetMapping
    @ApiOperation(value = "获取实体列表", notes = "")
    public Result list(S so) {
      PageHelper.startPage(so.getCurrentPage(), so.getPageSize());
      List list = service.findAll();
      PageInfo pageInfo = new PageInfo(list);
      excelExportParam();
      return ResultGenerator.genSuccessResult(pageInfo);
    }
    protected void excelExportParam() {
      ExportParams ep = new ExportParams(null, "数据");
      ExcelExportParam param = new ExcelExportParam<>();
      param.setClazz(voClazz);
      param.setExcelExport(ExcelExport.NormalExcel);
      param.setExportParams(ep);
      param.setFileName("文件.xls");
      F6Static.setExcelExportParam(param);
    }
    @GetMapping("/{id}")
    @ApiOperation(value = "获取单个实体", notes = "")
    public Result detail(@PathVariable PK id) {
      V vo = service.findById(id);
      return ResultGenerator.genSuccessResult(vo);
    }
    @DeleteMapping("/batch")
    @ApiOperation(value = "批量删除实体", notes = "")
    public Result batchDelete(@RequestParam String ids) {
      service.deleteByIds(ids);
      return ResultGenerator.genSuccessResult();
    }
    @GetMapping("/batch")
    @ApiOperation(value = "批量获取实体", notes = "")
    public Result batchDetail(@RequestParam String ids) {
      List vos = service.findByIds(ids);
      return ResultGenerator.genSuccessResult(vos);
    }
    @PostMapping("/batch")
    @ApiOperation(value = "批量新建实体", notes = "")
    public Result add(@RequestBody List vos) {
      service.save(vos);
      return ResultGenerator.genSuccessResult();
    }
    @GetMapping("/count")
    @ApiOperation(value = "获取实体数目", notes = "")
    public Result count(@RequestBody V v) {
      int count = service.selectCount(v);
      return ResultGenerator.genSuccessResult(count);
    }

Accept-Language: en;q=0.5, fr;q=0.0, nl;q=1.0, tr;q=0.0

 chrome: 
    Accept:application/xml,application/xhtml+xml,textml;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5     
    firefox:
    Accept:text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8      
    IE8: 
    Accept:image/gif, image/jpeg, image/pjpeg, image/pjpeg, application/x-shockwave-flash, application/x-silverlight, application/x-ms-application, application/x-ms-xbap, application/vnd.ms-xpsdocument, application/xaml+xml, */*  

@Bean
  public ViewResolver contentNegotiatingViewResolver(
      ContentNegotiationManager manager) {
    // Define the view resolvers
    ViewResolver beanNameViewResolver = new BeanNameViewResolver();
    List resolvers = Lists.newArrayList(beanNameViewResolver);
    ContentNegotiatingViewResolver resolver = new ContentNegotiatingViewResolver();
    resolver.setViewResolvers(resolvers);
    resolver.setContentNegotiationManager(manager);
    return resolver;
  }
  @Override
  public void configureContentNegotiation(ContentNegotiationConfigurer configurer) {
    configurer.favorPathExtension(true)
        .useJaf(false)
        .favorParameter(true)
        .parameterName("format")
        .ignoreAcceptHeader(true)
        .defaultContentType(MediaType.APPLICATION_JSON)
        .mediaType("json", MediaType.APPLICATION_JSON)
        .mediaType("xls", EXCEL_MEDIA_TYPE);
  }

  private HttpMessageConverter