RestTemplate的异常：Not enough variables available to expand

原因：RestTemplate使用出错，我的情况是不知道这里要求用RestTemplate的使用格式，应该很多人都是这样吧？不过，看了下RestTemplate，感觉其实还是很好用的。

RestTemplate是一种使用格式，正确的格式为

mockMvc.perform(MockMvcRequestBuilders
                .post("/lookRecord/delete/{collectId}", "8")
                .accept(MediaType.APPLICATION_JSON))
                .andExpect(MockMvcResultMatchers.status().isOk())
                .andDo(MockMvcResultHandlers.print())
                .andReturn();

直接传值
mockMvc.perform(MockMvcRequestBuilders
                .post("/lookRecord/delete/8")
                .accept(MediaType.APPLICATION_JSON))
                .andExpect(MockMvcResultMatchers.status().isOk())
                .andDo(MockMvcResultHandlers.print())
                .andReturn();

 错误的格式，不要使用转义符

mockMvc.perform(MockMvcRequestBuilders
                .post("/lookRecord/delete/{"collectId"}"，"8")
                .accept(MediaType.APPLICATION_JSON))
                .andExpect(MockMvcResultMatchers.status().isOk())
                .andDo(MockMvcResultHandlers.print())
                .andReturn();

 不要忘记传值

 mockMvc.perform(MockMvcRequestBuilders
                .post("/lookRecord/delete/{collectId}")
                .accept(MediaType.APPLICATION_JSON))
                .andExpect(MockMvcResultMatchers.status().isOk())
                .andDo(MockMvcResultHandlers.print())
                .andReturn();

 错误的直接传值

 mockMvc.perform(MockMvcRequestBuilders
                .post("/lookRecord/delete/{8}")
                .accept(MediaType.APPLICATION_JSON))
                .andExpect(MockMvcResultMatchers.status().isOk())
                .andDo(MockMvcResultHandlers.print())
                .andReturn();

简易理解的方式为

String data= {""name":"jack","age":18"};
String url = "http://localhost:8080/search?people={data}";
 mockMvc.perform(MockMvcRequestBuilders
                .post(url,data)
                .accept(MediaType.APPLICATION_JSON))
                .andExpect(MockMvcResultMatchers.status().isOk())
                .andDo(MockMvcResultHandlers.print())
                .andReturn();