前段时间做的功能，有些技术点记录下，
- //获取类加载的根路径
String rootPath=this.getClass().getResource("/").getPath();
根路径即画圈部分.png
2.httpclient模拟表单上传附件
需要实现的目标格式.png
具体实现：
HttpPost httpPost = new HttpPost(reqUrl);
httpPost.setConfig(config);
ContentType contentTypeUpload = ContentType.create("multipart/form-data");
MultipartEntityBuilder multipartEntityBuilder = MultipartEntityBuilder.create().setMode(HttpMultipartMode.BROWSER_COMPATIBLE);
multipartEntityBuilder.setBoundary("boundary--");
multipartEntityBuilder.setContentType(contentTypeUpload);
ContentType contentTypeMeta = ContentType.create("application/json");
multipartEntityBuilder.addTextBody("meta",params,contentTypeMeta);
//判断类型
ContentType contentTypeImage = ContentType.create("image/jpeg");
if (StringUtils.isNotBlank(fileName)){
String filename=fileName;
if (filename.endsWith(".png")) {
contentTypeImage = ContentType.create("image/png");
}else if (filename.endsWith(".jpg") || filename.endsWith(".jpeg") || filename.endsWith(".jpe")) {
contentTypeImage = ContentType.create("image/jpeg");
}else if (filename.endsWith(".gif")) {
contentTypeImage = ContentType.create("image/gif");
}else if (filename.endsWith(".ico")) {
contentTypeImage = ContentType.create("image/image/x-icon");
}
}
if (StringUtils.isNotBlank(fileName)){
multipartEntityBuilder.addBinaryBody("file",bytes,contentTypeImage,fileName);
}
HttpEntity httpEntity=multipartEntityBuilder.build();
httpPost.addHeader("Authorization",token);
httpPost.setHeader("Accept", "*/*");
httpPost.setEntity(httpEntity);
CloseableHttpResponse response = httpClient.execute(httpPost);
注：之前为了看到上传数据的结果，不小心打印了entity,只能上传很小的图片，稍大一点的上传图片结果出现了Content length is too long，找了老长时间原因。后来在源码中找到了报错原因，去掉调用此方法即可解决。
若打印entity内容有可能会抛异常.png
3.加载配置文件
public static PropertiesConfiguration config;
//PostConstruct在容器启动的时候加载，且仅加载一次
@PostConstruct
public static void init() {
try {
log.info("加载配置信息--开始");
config = new PropertiesConfiguration("bank/certificate/XXXX/certificate.properties");
log.info("加载配置信息--完成");
} catch (Exception e) {
log.error("初始化基础信息失败！:",e);
}
}
配置文件：
#平台证书序号
plantcer_XXXXX=bank/certificate/XXXXX/wenjianjia/zhengshuwenjian.pem
在静态方法中获取本地路径
//平台证书路径
String relativeFilePath= WeChatCertificateConfigUtils.config.getString("plantcer_"+merchantId);
// 读取本机存放的PKCS8证书文件
String currentPath = Thread.currentThread().getContextClassLoader().getResource(cerPath).getPath();
X509Certificate cert = PemUtil.loadCertificate(new FileInputStream(currentPath));
载入证书方法：
public static X509Certificate loadCertificate(InputStream inputStream) {
try {
log.info("---loadCertificate-----");
CertificateFactory cf = CertificateFactory.getInstance("X509");
X509Certificate cert = (X509Certificate) cf.generateCertificate(inputStream);
cert.checkValidity();
return cert;
} catch (CertificateExpiredException e) {
throw new RuntimeException("证书已过期", e);
} catch (CertificateNotYetValidException e) {
throw new RuntimeException("证书尚未生效", e);
} catch (CertificateException e) {
throw new RuntimeException("无效的证书", e);
}
}
获取内容的位置.png
4.将证书保存在本地
private void saveCertificate(List<PlainCertificateItem> cert,String outputFilePath) throws IOException {
//获取类加载的根路径
String rootPath=this.getClass().getResource("/").getPath();
String pkfp=StringUtils.join(rootPath,outputFilePath);
File file = new File(pkfp);
file.mkdirs();
for (PlainCertificateItem item : cert) {
String outputAbsoluteFilename = file.getAbsolutePath() + File.separator + "wechatpay_" + item.getSerialNo() + ".pem";
try (BufferedWriter writer = new BufferedWriter(
new OutputStreamWriter(new FileOutputStream(outputAbsoluteFilename), StandardCharsets.UTF_8))) {
writer.write(item.getPlainCertificate());
}
log.info("save cert file absolute path = {}" , outputAbsoluteFilename);
}
}
