kotlin之springboot二

来源：互联网发布：数据字典样例编辑：程序博客网时间：2024/06/18 12:45

这次再上一篇基础，继续加入控制器，顺便演示个校验插件

首先gradle中加入jar包，多加个fastjson指定为HttpMessageConverters

compile 'org.springframework.boot:spring-boot-starter-freemarker'compile group: 'com.alibaba', name: 'fastjson', version: '1.2.24'compile 'com.github.shi0288:check:v1.0.1'

application-dev.properties加入：

#FREEMARKER (FreeMarkerAutoConfiguration)spring.freemarker.allow-request-override=falsespring.freemarker.allow-session-override=falsespring.freemarker.cache=truespring.freemarker.charset=UTF-8spring.freemarker.check-template-location=truespring.freemarker.content-type=text/htmlspring.freemarker.enabled=truespring.freemarker.expose-request-attributes=falsespring.freemarker.expose-session-attributes=falsespring.freemarker.expose-spring-macro-helpers=truespring.freemarker.prefer-file-system-access=truespring.freemarker.suffix=.ftlspring.freemarker.template-loader-path=classpath:/templates/spring.freemarker.settings.template_update_delay=0spring.freemarker.settings.default_encoding=UTF-8spring.freemarker.settings.classic_compatible=truespring.freemarker.settings.number_format=#spring.freemarker.order=1spring.freemarker.request-context-attribute=request

Application.kt：

package com.mcpimport com.alibaba.fastjson.serializer.SerializerFeatureimport com.alibaba.fastjson.support.config.FastJsonConfigimport com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverterimport org.springframework.boot.SpringApplicationimport org.springframework.boot.autoconfigure.SpringBootApplicationimport org.springframework.boot.autoconfigure.web.HttpMessageConvertersimport org.springframework.context.annotation.Bean/** * Created by shiqm on 2017-10-27. */@SpringBootApplicationopen class Application{    @Bean    open fun fastJsonHttpMessageConverters(): HttpMessageConverters {        val fastConverter = FastJsonHttpMessageConverter()        val fastJsonConfig = FastJsonConfig()        fastJsonConfig.setSerializerFeatures(SerializerFeature.PrettyFormat)        fastConverter.fastJsonConfig = fastJsonConfig        return HttpMessageConverters(fastConverter)    }}fun main(args: Array<String>) {    SpringApplication.run(Application::class.java, *args)}

创建PageController

package com.mcp.controllerimport org.springframework.stereotype.Controllerimport org.springframework.web.bind.annotation.RequestMapping/** * Created by shiqm on 2017-10-27. */@Controllerclass PageController {    @RequestMapping("login")    fun login() { }}

创建AjaxController

package com.mcp.controllerimport org.springframework.web.bind.annotation.RequestMappingimport org.springframework.web.bind.annotation.RestController/** * Created by shiqm on 2017-10-27. */@RestControllerclass AjaxController {    @RequestMapping("user")    fun user() : Any{        return "My name is JACK!"    }}

resources里创建模板文件夹templates
创建login.ftl

<!DOCTYPE html><html><head>    <title>登录</title>    <meta charset="UTF-8"></head><body><form action="/user">    <input type="text" name="username"><br>    <input type="password" name="password"><br>    <input type="submit" value="提交"></form></body></html>

运行Application，可以浏览页面

127.0.0.1:8080/login

之前我们加入了验证控件，现在修改AjaxController中user方法，加入校验规则，这里使username为字母或数字，长度不小于5，password长度不小于10
AjaxController修改如下：

package com.mcp.controllerimport com.mcp.validate.annotation.Checkimport org.springframework.web.bind.annotation.RequestMappingimport org.springframework.web.bind.annotation.RestController/** * Created by shiqm on 2017-10-27. */@RestControllerclass AjaxController {    @RequestMapping("user")    fun user(            @Check(numOrLetter = true,length = 5) username: String,            @Check(length = 10) password: String    ): Any {        return "My name is JACK!"    }}

重新启动后测试：

127.0.0.1:8080/user?username=第三方个是的发生的&password=

这里写图片描述

已经报出异常，由此可以自己根据需求作校验了，校验控件有已经存在的校验方法，如果不合适，可以通过正则，或者自定义校验器，即可得到自己想要的。

这里再说一种处理异常的办法吧，我们可以做一个BaseController，对接口的所有异常信息进行监控和处理

创建BaseController

package com.mcp.controllerimport com.mcp.validate.exception.ValidateExceptionimport org.springframework.web.bind.annotation.ExceptionHandlerimport javax.servlet.http.HttpServletRequest/** * Created by shiqm on 2017-10-27. */open class BaseController {    @ExceptionHandler(Exception::class)    fun handleException(req: HttpServletRequest, ex: Exception): Any {        return when (ex) {            is ValidateException -> {                ex.bindResult            }            else -> {                ex.printStackTrace()                "/login"            }        }    }}

AjaxController继承此类

package com.mcp.controllerimport com.mcp.validate.annotation.Checkimport org.springframework.web.bind.annotation.RequestMappingimport org.springframework.web.bind.annotation.RestController/** * Created by shiqm on 2017-10-27. */@RestControllerclass AjaxController :BaseController(){    @RequestMapping("user")    fun user(            @Check(numOrLetter = true,length = 5) username: String,            @Check(length = 10) password: String    ): Any {        return "My name is JACK!"    }}

这时候重新启动，http://127.0.0.1:8080/user?username=sdf&password=

这里写图片描述

如图，只有正确的异常信息了。如何处理这个异常就是自己本身的逻辑了，这里只提供思路。

阅读全文

0 0