有时候项目需要用到微信登录或获取用户的手机号码，weixin-java-miniapp是一个好用的第三方工具，不用我们自己写httpcline调用。

导入jar包

       <dependency>
            <groupId>com.github.binarywang</groupId>
            <artifactId>weixin-java-miniapp</artifactId>
            <version>4.1.0</version>
        </dependency>

添加一个resource.properties文件，写上小程序的appid和secret

wx.miniapp.appid: xxxxxxxxxxxx
wx.miniapp.secret: xxxxxxxxxxxxxxxxxxxxxxxxxx
wx.miniapp.msgDataFormat: JSON

添加两个配置文件
WxMaProperties.java

@ConfigurationProperties(prefix = "wx.miniapp")
public class WxMaProperties {

    /**
     * 设置微信小程序的appid
     */
    private String appid;

    /**
     * 设置微信小程序的Secret
     */
    private String secret;

    /**
     * 消息格式，XML或者JSON
     */
    private String msgDataFormat;

    public String getAppid() {
        return appid;
    }

    public void setAppid(String appid) {
        this.appid = appid;
    }

    public String getSecret() {
        return secret;
    }

    public void setSecret(String secret) {
        this.secret = secret;
    }

    public String getMsgDataFormat() {
        return msgDataFormat;
    }

    public void setMsgDataFormat(String msgDataFormat) {
        this.msgDataFormat = msgDataFormat;
    }

WxMaConfiguration.java

@Configuration
@EnableConfigurationProperties(WxMaProperties.class)
public class WxMaConfiguration {

    @Bean
    public WxMaService wxMaService(WxMaProperties properties) {
        WxMaDefaultConfigImpl config = new WxMaDefaultConfigImpl();
        config.setAppid(properties.getAppid());
        config.setSecret(properties.getSecret());
        config.setMsgDataFormat(properties.getMsgDataFormat());

        WxMaService service = new WxMaServiceImpl();
        service.setWxMaConfig(config);
        return service;
    }

}

如何使用

    @Autowired
	private WxMaService wxMaService;

    @ApiOperation("获取微信授权信息")
    @ApiImplicitParam(name = "code",value = "前端授权登录后传来的code", required = true,paramType = "query")
    @RequestMapping(value = "/wechatSession", method = RequestMethod.POST)
    @ResponseBody
    public ResponseResult wechatSession(@RequestParam String code) {
        //获取openId、unionid、session_key
        WxMaJscode2SessionResult sessionInfo = wxMaService.getUserService().getSessionInfo(code);
    }


    @ApiOperation("小程序手机号登录")
    @ApiImplicitParams({
            @ApiImplicitParam(name = "sessionKey", value = "sessionKey", paramType = "query", dataType = "string", required = true),
            @ApiImplicitParam(name = "encryptedData", value = "加密串", paramType = "query", dataType = "string", required = true),
            @ApiImplicitParam(name = "iv", value = "偏移量", paramType = "query", dataType = "string", required = true)
    })
    @RequestMapping(value = "/wechatLogin", method = RequestMethod.POST)
    @ResponseBody
    public ResponseResult wechatLogin(HttpServletRequest request,                                     
                                      @RequestParam @NotBlank(message = "sessionKey不能为空") String sessionKey,                                    
                                      @RequestParam @NotBlank(message = "加密串不能为空") String encryptedData,
                                      @RequestParam @NotBlank(message = "偏移串不能为空") String iv) {
        WxMaPhoneNumberInfo phoneInfo = wxMaService.getUserService().getPhoneNoInfo(sessionKey, encryptedData, iv);
        return phoneInfo.getPurePhoneNumber(); 
    }