1.Pom.xml加入依賴

        <dependency>
            <groupId>com.github.binarywang</groupId>
            <artifactId>weixin-java-miniapp</artifactId>
            <version>3.0.0</version>
        </dependency>

2.設定配置類  WxMaConfiguration   類

@Configuration
@ConditionalOnClass(WxMaService.class)
@EnableConfigurationProperties(WxMaProperties.class)
public class WxMaConfiguration {
    private static final WxMaMessageHandler templateMsgHandler = (wxMessage, context, service, sessionManager) ->
            service.getMsgService().sendTemplateMsg(WxMaTemplateMessage.builder()
                    .templateId("此處更換為自己的模板id")
                    .formId("自己替換可用的formid")
                    .data(Lists.newArrayList(
                            new WxMaTemplateMessage.Data("keyword1", "339208499", "#173177")))
                    .toUser(wxMessage.getFromUser())
                    .build());

    private final WxMaMessageHandler logHandler = (wxMessage, context, service, sessionManager) -> {
        System.out.println("收到訊息：" + wxMessage.toString());
        service.getMsgService().sendKefuMsg(WxMaKefuMessage.newTextBuilder().content("收到資訊為：" + wxMessage.toJson())
                .toUser(wxMessage.getFromUser()).build());
    };

    private final WxMaMessageHandler textHandler = (wxMessage, context, service, sessionManager) ->
            service.getMsgService().sendKefuMsg(WxMaKefuMessage.newTextBuilder().content("回覆文字訊息")
                    .toUser(wxMessage.getFromUser()).build());

    private final WxMaMessageHandler picHandler = (wxMessage, context, service, sessionManager) -> {
        try {
            WxMediaUploadResult uploadResult = service.getMediaService()
                    .uploadMedia("image", "png",
                            ClassLoader.getSystemResourceAsStream("tmp.png"));
            service.getMsgService().sendKefuMsg(
                    WxMaKefuMessage
                            .newImageBuilder()
                            .mediaId(uploadResult.getMediaId())
                            .toUser(wxMessage.getFromUser())
                            .build());
        } catch (WxErrorException e) {
            e.printStackTrace();
        }
    };

    private final WxMaMessageHandler qrcodeHandler = (wxMessage, context, service, sessionManager) -> {
        try {
            final File file = service.getQrcodeService().createQrcode("123", 430);
            WxMediaUploadResult uploadResult = service.getMediaService().uploadMedia("image", file);
            service.getMsgService().sendKefuMsg(
                    WxMaKefuMessage
                            .newImageBuilder()
                            .mediaId(uploadResult.getMediaId())
                            .toUser(wxMessage.getFromUser())
                            .build());
        } catch (WxErrorException e) {
            e.printStackTrace();
        }
    };
    @Autowired
    private WxMaProperties properties;

    @Bean
    @ConditionalOnMissingBean
    public WxMaConfig maConfig() {
        WxMaInMemoryConfig config = new WxMaInMemoryConfig();
        config.setAppid(this.properties.getAppid());
        config.setSecret(this.properties.getSecret());
        config.setToken(this.properties.getToken());
        config.setAesKey(this.properties.getAesKey());
        config.setMsgDataFormat(this.properties.getMsgDataFormat());
        return config;
    }

    @Bean
    @ConditionalOnMissingBean
    public WxMaService wxMaService(WxMaConfig maConfig) {
        WxMaService service = new WxMaServiceImpl();
        service.setWxMaConfig(maConfig);
        return service;
    }

    @Bean
    public WxMaMessageRouter router(WxMaService service) {
        final WxMaMessageRouter router = new WxMaMessageRouter(service);
        router
                .rule().handler(logHandler).next()
                .rule().async(false).content("模板").handler(templateMsgHandler).end()
                .rule().async(false).content("文字").handler(textHandler).end()
                .rule().async(false).content("圖片").handler(picHandler).end()
                .rule().async(false).content("二維碼").handler(qrcodeHandler).end();
        return router;
    }

}
 

R類

/**
 * 返回資料
 *
 * @author chenshun
 * @email [email protected]
 * @date 2016年10月27日 下午9:59:27
 */
public class R extends HashMap<String, Object> {
    private static final long serialVersionUID = 1L;

    public R() {
        put("code", 0);
        put("msg", "success");
    }

    public static R error() {
        return error(HttpStatus.SC_INTERNAL_SERVER_ERROR, "未知異常，請聯絡管理員");
    }

    public static R error(String msg) {
        return error(HttpStatus.SC_INTERNAL_SERVER_ERROR, msg);
    }

    public static R error(int code, String msg) {
        R r = new R();
        r.put("code", code);
        r.put("msg", msg);
        return r;
    }

    public static R ok(String msg) {
        R r = new R();
        r.put("msg", msg);
        return r;
    }

    public static R ok(Map<String, Object> map) {
        R r = new R();
        r.putAll(map);
        return r;
    }

    public static R ok() {
        return new R();
    }

    public R put(String key, Object value) {
        super.put(key, value);
        return this;
    }
}
 

3.微信賬號相關的寫個配置  WxMaProperties.java

@ConfigurationProperties(prefix = "wechat.miniapp")
public class WxMaProperties {
    /**
     * 設定微信小程式的appid
     */
    private String appid;

    /**
     * 設定微信小程式的Secret
     */
    private String secret;

    /**
     * 設定微信小程式的token
     */
    private String token;

    /**
     * 設定微信小程式的EncodingAESKey
     */
    private String aesKey;

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

    public String getAppid() {
        return this.appid;
    }

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

    public String getSecret() {
        return this.secret;
    }

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

    public String getToken() {
        return this.token;
    }

    public void setToken(String token) {
        this.token = token;
    }

    public String getAesKey() {
        return this.aesKey;
    }

    public void setAesKey(String aesKey) {
        this.aesKey = aesKey;
    }

    public String getMsgDataFormat() {
        return msgDataFormat;
    }

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

    @Override
    public String toString() {
        return ToStringBuilder.reflectionToString(this, ToStringStyle.JSON_STYLE);
    }
}
 

4.專案配置檔案中配置  application.yml中

  miniapp:
     appid: 自己的appid
     secret: 自己的 mpAppSecret
     token: 111
     aesKey: 111
     msgDataFormat: JSON

5.寫Controller類   WechatController

@RestController
@RequestMapping("/wechat")
public class WechatController {

    @Autowired
    private WxMaService wxMaService;

    @ResponseBody
    @RequestMapping(value = "/getSessionInfo",method = RequestMethod.GET)
    @ApiOperation("根據code獲取SessionInfo")
    public R getSessionInfo(String code) {
        if (code != null && code.length() < 0) {
            return R.error("Code為空！");
        }
        try {
            WxMaJscode2SessionResult session = this.wxMaService.getUserService().getSessionInfo(code);
            return R.ok().put("session", session);
        } catch (WxErrorException e) {
            return R.error(e.toString());
        }
    }
    }

執行程式測試一下吧    測試地址 ： http://localhost:8080/wechat/getSessionInfo  用小程式測試一下吧