Java Code Examples for java.net.URLDecoder

/**
 * 获得指定Cookie的值
 * @param request 请求对象
 * @param response 响应对象
 * @param name 名字
 * @param isRemove 是否移除
 * @return 值
 */
public static String getCookie(HttpServletRequest request, HttpServletResponse response, String name, String path, boolean isRemove) {
	String value = null;
	if (StringUtils.isNotBlank(name)){
		Cookie[] cookies = request.getCookies();
		if (cookies != null) {
			for (Cookie cookie : cookies) {
				if (cookie.getName().equals(name)) {
					try {
						value = URLDecoder.decode(cookie.getValue(), "utf-8");
					} catch (UnsupportedEncodingException e) {
						e.printStackTrace();
					}
					if (isRemove && response != null) {
						cookie.setPath(path);
						cookie.setMaxAge(0);
						response.addCookie(cookie);
					}
				}
			}
		}
	}
	return value;
}
 

private void parseParams(String queryString, CommandRequest request) {
    for (String parameter : queryString.split("&")) {
        if (StringUtil.isBlank(parameter)) {
            continue;
        }

        String[] keyValue = parameter.split("=");
        if (keyValue.length != 2) {
            continue;
        }

        String value = StringUtil.trim(keyValue[1]);
        try {
            value = URLDecoder.decode(value, SentinelConfig.charset());
        } catch (UnsupportedEncodingException e) {
        }

        request.addParam(StringUtil.trim(keyValue[0]), value);
    }
}
 

@Override
public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
    HttpServletRequest request = ((HttpServletRequest) servletRequest);

    Map<String, String> formatMap = new HashMap<>(16);

    // 获取自定义参数
    Set<String> expandFormat = traceLogProperties.getFormat();
    for (String k : expandFormat) {
        String v = request.getHeader(k);
        if (!StringUtils.isEmpty(v)) {
            formatMap.put(k, URLDecoder.decode(v, "UTF-8"));
        }
    }

    // 写入 MDC
    TraceContentFactory.storageMDC(formatMap);

    filterChain.doFilter(servletRequest, servletResponse);
    MDC.clear();
}
 

@Override
public CommandResponse<String> handle(CommandRequest request) {
    String data = request.getParam("data");
    if (StringUtil.isBlank(data)) {
        return CommandResponse.ofFailure(new IllegalArgumentException("empty data"));
    }
    try {
        data = URLDecoder.decode(data, "utf-8");
        RecordLog.info("[ModifyClusterClientConfigHandler] Receiving cluster client config: " + data);
        ClusterClientStateEntity entity = JSON.parseObject(data, ClusterClientStateEntity.class);

        ClusterClientConfigManager.applyNewConfig(entity.toClientConfig());
        ClusterClientConfigManager.applyNewAssignConfig(entity.toAssignConfig());

        return CommandResponse.ofSuccess(CommandConstants.MSG_SUCCESS);
    } catch (Exception e) {
        RecordLog.warn("[ModifyClusterClientConfigHandler] Decode client cluster config error", e);
        return CommandResponse.ofFailure(e, "decode client cluster config error");
    }
}
 

/**
 * 得到Cookie的值,
 *
 * @param request
 * @param cookieName
 * @return
 */
public static String getCookieValue(HttpServletRequest request, String cookieName, boolean isDecoder) {
    Cookie[] cookieList = request.getCookies();
    if (cookieList == null || cookieName == null) {
        return null;
    }
    String retValue = null;
    try {
        for (int i = 0; i < cookieList.length; i++) {
            if (cookieList[i].getName().equals(cookieName)) {
                if (isDecoder) {
                    retValue = URLDecoder.decode(cookieList[i].getValue(), "UTF-8");
                } else {
                    retValue = cookieList[i].getValue();
                }
                break;
            }
        }
    } catch (UnsupportedEncodingException e) {
        logger.error("Cookie Decode Error.", e);
    }
    return retValue;
}
 

@Override
public CommandResponse<String> handle(CommandRequest request) {
    String data = request.getParam("data");
    if (StringUtil.isBlank(data)) {
        return CommandResponse.ofFailure(new IllegalArgumentException("Bad data"));
    }
    try {
        data = URLDecoder.decode(data, "utf-8");
    } catch (Exception e) {
        RecordLog.info("Decode gateway rule data error", e);
        return CommandResponse.ofFailure(e, "decode gateway rule data error");
    }

    RecordLog.info(String.format("[API Server] Receiving rule change (type: gateway rule): %s", data));

    String result = SUCCESS_MSG;
    List<GatewayFlowRule> flowRules = JSONArray.parseArray(data, GatewayFlowRule.class);
    GatewayRuleManager.loadRules(new HashSet<>(flowRules));
    return CommandResponse.ofSuccess(result);
}
 

private RpcProvider convert2Provider(String serviceName, String providerData) {

        try {
            providerData = URLDecoder.decode(providerData, "UTF-8");
        } catch (UnsupportedEncodingException e) {
            throw new RuntimeException(e);
        }

        RpcProvider rpcProvider = new RpcProvider();
        ProviderInfo providerInfo = ProviderHelper.toProviderInfo(providerData);

        rpcProvider.setServiceName(serviceName);
        rpcProvider.setAddress(providerInfo.getHost());
        rpcProvider.setPort(providerInfo.getPort());
        String appName = providerInfo.getStaticAttr(ProviderInfoAttrs.ATTR_APP_NAME);
        rpcProvider.setAppName(appName);
        rpcProvider.setWeight(providerInfo.getWeight());
        return rpcProvider;
    }
 

public static Set<Class<?>> scan(String packageName, boolean recursive) {
    String packageDirName = packageName.replace('.', '/');
    try {
        Set<Class<?>> classSet = new LinkedHashSet<>();
        Enumeration<URL> dirs = Thread.currentThread().getContextClassLoader().getResources(packageDirName);
        while (dirs.hasMoreElements()) {
            URL url = dirs.nextElement();
            String protocol = url.getProtocol();
            // If it's file, storage on the server
            if ("file".equals(protocol)) {
                String filePath = URLDecoder.decode(url.getFile(), "UTF-8");

                classSet.addAll(findClassesInPackageByFile(packageName, filePath, recursive));
            } else if ("jar".equals(protocol)) {
                classSet.addAll(findClassesInPackageByJar(packageName, url, recursive));
            }
        }
        return classSet;
    } catch (IOException e) {
        logger.error("error happen while scanning package", e);
    }

    return Collections.emptySet();
}
 

private ImageSource(@NonNull Uri uri) {
    // #114 If file doesn't exist, attempt to url decode the URI and try again
    String uriString = uri.toString();
    if (uriString.startsWith(FILE_SCHEME)) {
        File uriFile = new File(uriString.substring(FILE_SCHEME.length() - 1));
        if (!uriFile.exists()) {
            try {
                uri = Uri.parse(URLDecoder.decode(uriString, "UTF-8"));
            } catch (UnsupportedEncodingException e) {
                // Fallback to encoded URI. This exception is not expected.
            }
        }
    }
    this.bitmap = null;
    this.uri = uri;
    this.resource = null;
    this.tile = true;
}
 

/**
 * 高级查询
 * @param queryWrapper
 * @param parameterMap
 */
public static void doSuperQuery(QueryWrapper<?> queryWrapper,Map<String, String[]> parameterMap) {
	if(parameterMap!=null&& parameterMap.containsKey(SUPER_QUERY_PARAMS)){
		String superQueryParams = parameterMap.get(SUPER_QUERY_PARAMS)[0];
		// 解码
		try {
			superQueryParams = URLDecoder.decode(superQueryParams, "UTF-8");
		} catch (UnsupportedEncodingException e) {
			log.error("--高级查询参数转码失败!", e);
		}
		List<QueryCondition> conditions = JSON.parseArray(superQueryParams, QueryCondition.class);
		log.info("---高级查询参数-->"+conditions.toString());
		
		for (QueryCondition rule : conditions) {
			if(oConvertUtils.isNotEmpty(rule.getField()) && oConvertUtils.isNotEmpty(rule.getRule()) && oConvertUtils.isNotEmpty(rule.getVal())){
				addEasyQuery(queryWrapper, rule.getField(), QueryRuleEnum.getByValue(rule.getRule()), rule.getVal());
			}
		}
	}
}
 

/**
    * 导出excel
 *
 * @param request
 * @param response
 */
@RequestMapping(value = "/exportXls")
public ModelAndView exportXls(HttpServletRequest request, HttpServletResponse response) {
    // Step.1 组装查询条件
    QueryWrapper<JoaDemo> queryWrapper = null;
    try {
        String paramsStr = request.getParameter("paramsStr");
        if (oConvertUtils.isNotEmpty(paramsStr)) {
            String deString = URLDecoder.decode(paramsStr, "UTF-8");
            JoaDemo joaDemo = JSON.parseObject(deString, JoaDemo.class);
            queryWrapper = QueryGenerator.initQueryWrapper(joaDemo, request.getParameterMap());
        }
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    }

    //Step.2 AutoPoi 导出Excel
    ModelAndView mv = new ModelAndView(new JeecgEntityExcelView());
    List<JoaDemo> pageList = joaDemoService.list(queryWrapper);
    //导出文件名称
    mv.addObject(NormalExcelConstants.FILE_NAME, "流程测试列表");
    mv.addObject(NormalExcelConstants.CLASS, JoaDemo.class);
    mv.addObject(NormalExcelConstants.PARAMS, new ExportParams("流程测试列表数据", "导出人:Jeecg", "导出信息"));
    mv.addObject(NormalExcelConstants.DATA_LIST, pageList);
    return mv;
}
 

/**
 * 得到Cookie的值,
 *
 * @param request
 * @param cookieName
 * @return
 */
public static String getCookieValue(HttpServletRequest request, String cookieName, boolean isDecoder) {
    Cookie[] cookieList = request.getCookies();
    if (cookieList == null || cookieName == null) {
        return null;
    }
    String retValue = null;
    try {
        for (int i = 0; i < cookieList.length; i++) {
            if (cookieList[i].getName().equals(cookieName)) {
                if (isDecoder) {
                    retValue = URLDecoder.decode(cookieList[i].getValue(), "UTF-8");
                } else {
                    retValue = cookieList[i].getValue();
                }
                break;
            }
        }
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    }
    return retValue;
}
 

protected <T> void verifyExporterUrlGeneration(T config, Object[][] dataTable) {

        // 1. fill corresponding config with data
        ////////////////////////////////////////////////////////////
        fillConfigs(config, dataTable, TESTVALUE1);

        // 2. export service and get url parameter string from db
        ////////////////////////////////////////////////////////////
        servConf.export();
        String paramStringFromDb = getProviderParamString();
        try {
            paramStringFromDb = URLDecoder.decode(paramStringFromDb, "UTF-8");
        } catch (UnsupportedEncodingException e) {
            // impossible
        }


        assertUrlStringWithLocalTable(paramStringFromDb, dataTable, config.getClass().getName(), TESTVALUE1);


        // 4. unexport service
        ////////////////////////////////////////////////////////////
        servConf.unexport();
    }
 

/**
 * Check whether the given path contains invalid escape sequences.
 * @param path the path to validate
 * @return {@code true} if the path is invalid, {@code false} otherwise
 */
private boolean isInvalidEncodedPath(String path) {
	if (path.contains("%")) {
		try {
			// Use URLDecoder (vs UriUtils) to preserve potentially decoded UTF-8 chars
			String decodedPath = URLDecoder.decode(path, "UTF-8");
			if (isInvalidPath(decodedPath)) {
				return true;
			}
			decodedPath = processPath(decodedPath);
			if (isInvalidPath(decodedPath)) {
				return true;
			}
		}
		catch (IllegalArgumentException | UnsupportedEncodingException ex) {
			// Should never happen...
		}
	}
	return false;
}
 

/**
 * Check whether the given path contains invalid escape sequences.
 * @param path the path to validate
 * @return {@code true} if the path is invalid, {@code false} otherwise
 */
private boolean isInvalidEncodedPath(String path) {
	if (path.contains("%")) {
		try {
			// Use URLDecoder (vs UriUtils) to preserve potentially decoded UTF-8 chars
			String decodedPath = URLDecoder.decode(path, "UTF-8");
			if (isInvalidPath(decodedPath)) {
				return true;
			}
			decodedPath = processPath(decodedPath);
			if (isInvalidPath(decodedPath)) {
				return true;
			}
		}
		catch (IllegalArgumentException | UnsupportedEncodingException ex) {
			// Should never happen...
		}
	}
	return false;
}
 

private boolean isInvalidEncodedPath(String resourcePath) {
	if (resourcePath.contains("%")) {
		// Use URLDecoder (vs UriUtils) to preserve potentially decoded UTF-8 chars...
		try {
			String decodedPath = URLDecoder.decode(resourcePath, "UTF-8");
			if (decodedPath.contains("../") || decodedPath.contains("..\\")) {
				logger.warn("Resolved resource path contains encoded \"../\" or \"..\\\": " + resourcePath);
				return true;
			}
		}
		catch (UnsupportedEncodingException ex) {
			// Should never happen...
		}
	}
	return false;
}
 

/**
 * 高级查询
 * @param queryWrapper
 * @param parameterMap
 */
public static void doSuperQuery(QueryWrapper<?> queryWrapper,Map<String, String[]> parameterMap) {
	if(parameterMap!=null&& parameterMap.containsKey(SUPER_QUERY_PARAMS)){
		String superQueryParams = parameterMap.get(SUPER_QUERY_PARAMS)[0];
		// 解码
		try {
			superQueryParams = URLDecoder.decode(superQueryParams, "UTF-8");
		} catch (UnsupportedEncodingException e) {
			log.error("--高级查询参数转码失败!", e);
		}
		List<QueryCondition> conditions = JSON.parseArray(superQueryParams, QueryCondition.class);
		log.info("---高级查询参数-->"+conditions.toString());
		
		for (QueryCondition rule : conditions) {
			if(oConvertUtils.isNotEmpty(rule.getField()) && oConvertUtils.isNotEmpty(rule.getRule()) && oConvertUtils.isNotEmpty(rule.getVal())){
				addEasyQuery(queryWrapper, rule.getField(), QueryRuleEnum.getByValue(rule.getRule()), rule.getVal());
			}
		}
	}
}
 

/**
 * Returns the time-stamp for a document's last update
 */
private final long getLastModified(String uri) {
    try {
        URL url = new URL(uri);
        URLConnection connection = url.openConnection();
        long timestamp = connection.getLastModified();
        // Check for a "file:" URI (courtesy of Brian Ewins)
        if (timestamp == 0){ // get 0 for local URI
            if ("file".equals(url.getProtocol())){
                File localfile = new File(URLDecoder.decode(url.getFile()));
                timestamp = localfile.lastModified();
            }
        }
        return(timestamp);
    }
    // Brutal handling of all exceptions
    catch (Exception e) {
        return(System.currentTimeMillis());
    }
}
 

@Override
public DataHandler getAttachmentAsDataHandler(String contentId) {
	if (contentId.startsWith(CID)) {
		contentId = contentId.substring(CID.length());
		try {
			contentId = URLDecoder.decode(contentId, "UTF-8");
		}
		catch (UnsupportedEncodingException ex) {
			// ignore
		}
		contentId = '<' + contentId + '>';
	}
	DataHandler dataHandler = this.mimeContainer.getAttachment(contentId);
	if (dataHandler == null) {
		throw new IllegalArgumentException("No attachment found for " + contentId);
	}
	return dataHandler;
}
 

@Override
public CommandResponse<String> handle(CommandRequest request) {
    String data = request.getParam("data");
    if (StringUtil.isBlank(data)) {
        return CommandResponse.ofFailure(new IllegalArgumentException("empty data"));
    }
    try {
        data = URLDecoder.decode(data, "utf-8");
        RecordLog.info("[ModifyServerNamespaceSetHandler] Receiving cluster server namespace set: " + data);
        Set<String> set = JSON.parseObject(data, new TypeReference<Set<String>>() {});
        ClusterServerConfigManager.loadServerNamespaceSet(set);
        return CommandResponse.ofSuccess("success");
    } catch (Exception e) {
        RecordLog.warn("[ModifyServerNamespaceSetHandler] Decode cluster server namespace set error", e);
        return CommandResponse.ofFailure(e, "decode client cluster config error");
    }
}
 

private RpcConsumer convert2Consumer(String serviceName, String providerData) {

        try {
            providerData = URLDecoder.decode(providerData, "UTF-8");
        } catch (UnsupportedEncodingException e) {
            throw new RuntimeException(e);
        }

        RpcConsumer rpcConsumer = new RpcConsumer();
        ProviderInfo consumerInfo = ProviderHelper.toProviderInfo(providerData);
        String appName = consumerInfo.getStaticAttr(ProviderInfoAttrs.ATTR_APP_NAME);
        rpcConsumer.setAppName(appName);
        rpcConsumer.setServiceName(serviceName);
        rpcConsumer.setAddress(consumerInfo.getHost());
        rpcConsumer.setPort(consumerInfo.getPort());
        return rpcConsumer;
    }
 

public static List<LinkProperty> getLinkExtensions(String urlEncodedExtensionString) {
	List<LinkProperty> resultList = new ArrayList<>();
	if (StringUtils.isNotBlank(urlEncodedExtensionString)) {
		if (urlEncodedExtensionString.startsWith("?")) {
			urlEncodedExtensionString = urlEncodedExtensionString.substring(1);
		}
		for (String keyValueParamString : urlEncodedExtensionString.split("&")) {
			String[] parts = keyValueParamString.split("=");
			if (StringUtils.isNotBlank(parts[0])) {
				try {
					if (parts.length > 1 && StringUtils.isNotBlank(parts[1])) {
						resultList.add(new LinkProperty(PropertyType.LinkExtension, URLDecoder.decode(parts[0], "UTF-8"), URLDecoder.decode(parts[1], "UTF-8")));
					} else {
						resultList.add(new LinkProperty(PropertyType.LinkExtension, URLDecoder.decode(parts[0], "UTF-8"), ""));
					}
				} catch (UnsupportedEncodingException e) {
					logger.error("Error occured: " + e.getMessage(), e);
				}
			}
		}
	}
	return resultList;
}
 

@Override
public Object resolveArgument(MethodParameter parameter, ModelAndViewContainer mavContainer, NativeWebRequest nativeWebRequest, WebDataBinderFactory binderFactory) throws Exception {
    RequestJsonToPo parameterAnnotation = parameter.getParameterAnnotation(RequestJsonToPo.class);
    Objects.requireNonNull(parameterAnnotation);
    String value = parameterAnnotation.value();
    Class<?> clazz = parameter.getNestedParameterType();
    String jsonParameter = nativeWebRequest.getParameter(value);
    if (jsonParameter == null) {
        if (clazz.isAssignableFrom(List.class)) {
            return Lists.newArrayList();
        }
        return clazz.newInstance();
    }
    jsonParameter = URLDecoder.decode(jsonParameter, StandardCharsets.UTF_8.name());

    if (clazz.isAssignableFrom(List.class) || clazz.isAssignableFrom(ArrayList.class)) {
        String typeName = ((sun.reflect.generics.reflectiveObjects.ParameterizedTypeImpl) parameter.getGenericParameterType()).getActualTypeArguments()[0].getTypeName();
        Class<?> aClass = Class.forName(typeName);
        return JsonUtil.toList(jsonParameter, aClass);
    } else {
        return JsonUtil.toObject(jsonParameter, clazz);
    }
}
 

@SuppressWarnings("deprecation") 
public static String decode(String url) { 
	if (isUTF8(url)) { 
		url = UTF8Decode(url); 
	} else { 
		url = URLDecoder.decode(url); 
	} 
	return url; 
}
 

public static String escapeUrl(RestRequestContainer request, Templater templater)
		throws MalformedURLException, URISyntaxException {
	String finalUrl = templater.replaceTags(request.getUrl());
	URL url = new URL(URLDecoder.decode(finalUrl));
    URI uri = new URI(url.getProtocol(), url.getUserInfo(), url.getHost(), url.getPort(), url.getPath(), url.getQuery(), url.getRef());
    return uri.toASCIIString();
}
 

public static String decodeURL(String encodedData) throws Exception {
	try {
		return URLDecoder.decode(encodedData, "UTF-8");
	} catch (UnsupportedEncodingException e) {
		throw new Exception("Invalid url-encoded data");
	}
}
 

/**
 * scan the package.
 *
 * @param basePackage the basic class package's string.
 * @param recursive   whether to search recursive.
 * @return Set of the found classes.
 */
public Set<Class<?>> getPackageAllClasses(String basePackage, boolean recursive) {
    if (basePackage == null) {
        return new HashSet<>();
    }
    Set<Class<?>> classes = new LinkedHashSet<Class<?>>();
    String packageName = basePackage;
    if (packageName.endsWith(".")) {
        packageName = packageName.substring(0, packageName.lastIndexOf('.'));
    }
    String package2Path = packageName.replace('.', '/');
    try {
        Enumeration<URL> dirs = Thread.currentThread().getContextClassLoader().getResources(package2Path);
        while (dirs.hasMoreElements()) {
            URL url = dirs.nextElement();
            String protocol = url.getProtocol();
            if ("file".equals(protocol)) {
                String filePath = URLDecoder.decode(url.getFile(), "UTF-8");
                doScanPackageClassesByFile(classes, packageName, filePath, recursive);
            } else if ("jar".equals(protocol)) {
                doScanPackageClassesByJar(packageName, url, recursive, classes);
            }
        }
    } catch (IOException e) {
        LOGGER.error("ignore this IOException", e);
    }
    TreeSet<Class<?>> sortedClasses = new TreeSet<>(new ClassNameComparator());
    sortedClasses.addAll(classes);
    return sortedClasses;
}
 

/**
 * 解码字符串
 * @param text 字符串
 * @return
 */
public static String decodeURL(String text){
    try {
        return URLDecoder.decode(text, CommonConfig.UNIFY_CHARSET);
    } catch (UnsupportedEncodingException e) {
        throw new RuntimeException(e);
    }
}
 

/**
 * 获取文件外链
 * @param bucketName
 * @param objectName
 * @param expires
 * @return
 */
public static String getObjectURL(String bucketName, String objectName, Date expires) {
    initOSS(endPoint, accessKeyId, accessKeySecret);
    try{
        if(ossClient.doesObjectExist(bucketName,objectName)){
            URL url = ossClient.generatePresignedUrl(bucketName,objectName,expires);
            return URLDecoder.decode(url.toString(),"UTF-8");
        }
    }catch (Exception e){
        log.info("文件路径获取失败" + e.getMessage());
    }
    return null;
}
 

@Override
public Object convert(Conversion conversion, ConversionProvider provider) throws Exception {
    if (!supports(conversion) || !conversion.name.equals(conversion.expression)) return conversion.value;
    else if (conversion.type == Boolean.class) return Boolean.valueOf(conversion.decoded ? conversion.values[0] : URLDecoder.decode(conversion.values[0], conversion.charset));
    else if (conversion.type == Byte.class) return Byte.valueOf(conversion.decoded ? conversion.values[0] : URLDecoder.decode(conversion.values[0], conversion.charset));
    else if (conversion.type == Short.class) return Short.valueOf(conversion.decoded ? conversion.values[0] : URLDecoder.decode(conversion.values[0], conversion.charset));
    else if (conversion.type == Character.class) return conversion.decoded ? conversion.values[0] : URLDecoder.decode(conversion.values[0], conversion.charset).charAt(0);
    else if (conversion.type == Integer.class) return Integer.valueOf(conversion.decoded ? conversion.values[0] : URLDecoder.decode(conversion.values[0], conversion.charset));
    else if (conversion.type == Float.class) return Float.valueOf(conversion.decoded ? conversion.values[0] : URLDecoder.decode(conversion.values[0], conversion.charset));
    else if (conversion.type == Long.class) return Long.valueOf(conversion.decoded ? conversion.values[0] : URLDecoder.decode(conversion.values[0], conversion.charset));
    else if (conversion.type == Double.class) return Double.valueOf(conversion.decoded ? conversion.values[0] : URLDecoder.decode(conversion.values[0], conversion.charset));
    else return conversion.value;
}