springboot与微信开发（一）

springboot开发微信环境搭建

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需要用到IntelliJ IDEA、微信公号测试平台、springboot、内网穿透（本地开发比较方便，这里我用的是小米球内网穿透）
请自行建立springboot项目
首先我们需要登录到微信测试开发平台,接口配置信息如下图:

我们在配置的时候需要建立springboot项目,将项目运行起来才可以配置成功，我们先去建立controller类，类里面的请求方法：

@Controller
public class WechatController {
	@GetMapping("/wx")
    @ResponseBody
    public String login(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse) {
        String signature = httpServletRequest.getParameter("signature");
        String timestamp = httpServletRequest.getParameter("timestamp");
        String nonce = httpServletRequest.getParameter("nonce");
        String echostr = httpServletRequest.getParameter("echostr");
        if (CheckUntil.checkSignatures(signature, timestamp, nonce)) {
            return echostr;
        }
        return null;
    }
    }

建立微信工具类和SHA1加密类：

public class CheckUntil {

    private static final String token = "这里写的你的token";

    public static boolean checkSignatures(String signature, String timestamp, String nonce) {
        String[] strings = new String[]{nonce, token, timestamp};
        Arrays.sort(strings);
        StringBuffer stringBuffer = new StringBuffer();
        for (String string : strings) {
            stringBuffer.append(string);
        }
        if (SHA1.encode(stringBuffer.toString()).equals(signature)) {
            return true;
        }
        return false;
    }
}

public final class SHA1 {

    private static final char[] HEX_DIGITS = {'0', '1', '2', '3', '4', '5',
            '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};

    /**
     * Takes the raw bytes from the digest and formats them correct.
     *
     * @param bytes the raw bytes from the digest.
     * @return the formatted bytes.
     */
    private static String getFormattedText(byte[] bytes) {
        int len = bytes.length;
        StringBuilder buf = new StringBuilder(len * 2);
        // 把密文转换成十六进制的字符串形式
        for (int j = 0; j < len; j++) {
            buf.append(HEX_DIGITS[(bytes[j] >> 4) & 0x0f]);
            buf.append(HEX_DIGITS[bytes[j] & 0x0f]);
        }
        return buf.toString();
    }

    public static String encode(String str) {
        if (str == null) {
            return null;
        }
        try {
            MessageDigest messageDigest = MessageDigest.getInstance("SHA1");
            messageDigest.update(str.getBytes());
            return getFormattedText(messageDigest.digest());
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }
}

这时候运行项目之后，我们就可以继续配置微信接口，。
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