使用SpringMVC响应json格式返回的结果类型

@RestController//所有的方法都需要返回json格式的字符串
public class ProductController {
	@RequestMapping("queryAll.do")
	public List<Product> queryAll() {
		
		//模拟数据
		List<Product> products = new ArrayList<>();
		for (int i = 1; i <= 10; i++) {
			Product p = new Product(i, "name" + i);
			products.add(p);
		}
		return products;
	}
}

@Controller
public class ProductController {
	@RequestMapping("queryAll.do")
	@ResponseBody // 这个注解放在方法上，目的是把该方法的返回值转换成json格式的字符串
	public List<Product> queryAll() {
		
		//模拟数据
		List<Product> products = new ArrayList<>();
		for (int i = 1; i <= 10; i++) {
			Product p = new Product(i, "name" + i);
			products.add(p);
		}
		return products;
	}
}

<bean id="defaultJsonView" class="org.springframework.web.servlet.view.json.MappingJacksonJsonView"/> 

<bean id="defaultJsonView" class="org.springframework.web.servlet.view.json.MappingJackson2JsonView"/>

public class JsonUtil
{    
    private static Gson gson=new Gson();  
    /**
     * @MethodName : toJson
     * @Description : 将对象转为JSON串，此方法能够满足大部分需求
     * @param src
     *            :将要被转化的对象
     * @return :转化后的JSON串
     */
    public static String toJson(Object src) {
        if (src == null) {
            return gson.toJson(JsonNull.INSTANCE);
        }
        return gson.toJson(src);
    }
}

@ResponseBody
  @RequestMapping("/list")
  public List<String> list(ModelMap modelMap) {
    String hql = "select c from Clothing c ";
    Page<Clothing> page = new Page<Clothing>();
    page.setPageSize(6);
    page  = clothingServiceImpl.queryForPageByHql(page, hql);    
    return page.getResult();
  }

<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"
  p:ignoreDefaultModelOnRedirect="true" >
   <property name="messageConverters">
    <list>
     <bean class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter"/>
    </list>
   </property>
  </bean>