调用百度汇率api 获取各国的汇率值
Posted 阿若蜜意
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设置一个定时任务，每天更新汇率java代码如下
package com.thinkgem.jeesite.modules.huiLvApi.service; import java.io.BufferedReader; import java.io.InputStream; import java.io.InputStreamReader; import java.net.HttpURLConnection; import java.net.URL; import java.util.Date; import java.util.List; import org.activiti.engine.impl.util.json.JSONArray; import org.codehaus.jettison.json.JSONException; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.context.annotation.Scope; import org.springframework.stereotype.Service; import com.thinkgem.jeesite.common.utils.GsonUtils; import com.thinkgem.jeesite.modules.huiLvApi.entity.RetData; import com.thinkgem.jeesite.modules.huiLvApi.entity.Root; import com.thinkgem.jeesite.modules.sys.entity.Dict; import com.thinkgem.jeesite.modules.sys.service.DictService; /** * 调用百度汇率api * * @author Administrator * */ @Service @Scope public class HuiLvService { @Autowired DictService dictService; /** * @param urlAll * :请求接口 * @param httpArg * :参数 * @return 返回结果 */ public static String request(String httpUrl, String httpArg) { BufferedReader reader = null; String result = null; StringBuffer sbf = new StringBuffer(); httpUrl = httpUrl + "?" + httpArg; try { URL url = new URL(httpUrl); HttpURLConnection connection = (HttpURLConnection) url.openConnection(); connection.setRequestMethod("GET"); // 填入apikey到HTTP header connection.setRequestProperty("apikey", "0d263364faa016e5f06075b69b799087"); connection.connect(); InputStream is = connection.getInputStream(); reader = new BufferedReader(new InputStreamReader(is, "UTF-8")); String strRead = null; while ((strRead = reader.readLine()) != null) { sbf.append(strRead); sbf.append("\r\n"); } reader.close(); result = sbf.toString(); } catch (Exception e) { e.printStackTrace(); } return result; } /** * 定时任务每天执行调用百度汇率api * * @throws JSONException */ public void queryHuiLv() { String httpUrl = "http://apis.baidu.com/apistore/currencyservice/currency"; String httpArg = null; Dict dict = new Dict(); dict.setType("hui_lv"); List<Dict> dictList = dictService.findList(dict);// 查询出数据库表中所有的汇率 if (dictList != null && dictList.size() > 0) { for (Dict dt : dictList) { String value = dt.getValue(); httpArg = "fromCurrency=" + value + "&toCurrency=CNY&amount=1"; if (!"1".equals(value)) {// 表里面目前有个舍客勒 键值是1，所以调用百度接口时无法识别 String data = request(httpUrl, httpArg); try { if (data != null && !"".equals(data)) { Root rt = GsonUtils.json2T(data, Root.class); RetData retData = rt.getRetData(); dt.setValue(retData.getFromCurrency());// 汇率简称 dt.setLabel(retData.getCurrency());// 值 dt.setUpdateDate(new Date()); dictService.updateHuiLv(dt); System.out.println(data); System.out.println(retData); } } catch (Exception e) { e.printStackTrace(); } } } } } /** * 测试用 * * @param httpUrl * @param httpArg * @return */ public static String newRequest(String httpUrl, String httpArg) { BufferedReader reader = null; String result = null; StringBuffer sbf = new StringBuffer(); httpUrl = httpUrl + "?" + httpArg; try { URL url = new URL(httpUrl); HttpURLConnection connection = (HttpURLConnection) url.openConnection(); connection.setRequestMethod("GET"); // 填入apikey到HTTP header connection.setRequestProperty("apikey", "0d263364faa016e5f06075b69b799087"); connection.connect(); InputStream is = connection.getInputStream(); reader = new BufferedReader(new InputStreamReader(is, "UTF-8")); String strRead = null; while ((strRead = reader.readLine()) != null) { sbf.append(strRead); sbf.append("\r\n"); } reader.close(); result = sbf.toString(); } catch (Exception e) { e.printStackTrace(); } return result; } public static void main(String[] args) { String httpUrl = "http://apis.baidu.com/apistore/currencyservice/currency"; String httpArg = "fromCurrency=USD&toCurrency=CNY&amount=1"; String jsonResult = newRequest(httpUrl, httpArg); System.out.println(jsonResult); } }
定时任务配置配置文件名称是spring-tasks.xml (spring-tasks.xml 里面有配置如何定时执行queryHuiLv)请留意看
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:c="http://www.springframework.org/schema/c" xmlns:cache="http://www.springframework.org/schema/cache" xmlns:context="http://www.springframework.org/schema/context" xmlns:jdbc="http://www.springframework.org/schema/jdbc" xmlns:jee="http://www.springframework.org/schema/jee" xmlns:lang="http://www.springframework.org/schema/lang" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:p="http://www.springframework.org/schema/p" xmlns:task="http://www.springframework.org/schema/task" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:util="http://www.springframework.org/schema/util" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc.xsd http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee.xsd http://www.springframework.org/schema/lang http://www.springframework.org/schema/lang/spring-lang.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util.xsd"> <!-- 定时清除手机短信redis缓存 --> <task:scheduled-tasks scheduler="scheduler"> <!-- <task:scheduled ref="yuDengJiPushService" method="queryYuDengJiPush" cron="0 0/1 * * * ?"/> --> <task:scheduled fixed-delay="3600000" initial-delay="3000" ref="flightService" method="queryIndexFlight" /> <task:scheduled ref="systemService" method="clearSmsCache" cron="0 30 23 ? * * " /> <task:scheduled ref="exhiMainService" method="handleCuXiaoEnd" cron="0 0 8 * * ?" /> <task:scheduled ref="exhiMainService" method="outDateExhi" cron="0 30 0 ? * * " /> <task:scheduled ref="xuQiuService" method="setXuQiuCount" cron="* * 10,12,14,15,16,17 * * ? " /> <task:scheduled ref="columnService" method="cleanOutDateExhi" cron="0 30 0 ? * * " /> <task:scheduled ref="orderMainService" method="kaiZhanTiShi" cron="0 0 7 * * ?" /> <task:scheduled ref="yuDengJiPushService" method="queryYuDengJiPush" cron="0 30 8 * * ?"/> <task:scheduled ref="searchRecordService" method="batchSave" cron="0 0/10 * * * ? "/> <task:scheduled ref="fenXiaoRecordService" method="batchSave" cron="0 10 0 * * ? "/> <task:scheduled ref="logService" method="batchSave" cron="0 0/2 * * * ? "/> <task:scheduled ref="systemService" method="kaiFaRenYuanPush" cron="0 0 9 * * ?"/> <!-- <task:scheduled ref="huiLvService" method="queryHuiLv" cron="0 0 21 * * ?"/> --> <!-- <task:scheduled ref="huiLvService" method="queryHuiLv" cron="0 0/1 * * * ?"/> --> </task:scheduled-tasks> </beans>
spring-tasks.xml 配置在spring-context.xml里面
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:jdbc="http://www.springframework.org/schema/jdbc" xmlns:jee="http://www.springframework.org/schema/jee" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:util="http://www.springframework.org/schema/util" xmlns:task="http://www.springframework.org/schema/task" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-4.0.xsd http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-4.0.xsd http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-4.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd" default-lazy-init="true"> <description>Spring Configuration</description> <!-- 加载配置属性文件 --> <context:property-placeholder ignore-unresolvable="true" location="classpath:jeesite.properties" /> <task:scheduled-tasks scheduler="scheduler"> <task:scheduled ref="orderMainService" method="cuiKuan" cron="${allipay.cron.cuikuan}" /> </task:scheduled-tasks> <!-- 加载应用属性实例，可通过 @Value("#{APP_PROP[‘jdbc.driver‘]}") String jdbcDriver 方式引用 --> <util:properties id="APP_PROP" location="classpath:jeesite.properties" local-override="true"/> <!-- 使用Annotation自动注册Bean，解决事物失效问题：在主容器中不扫描@Controller注解，在SpringMvc中只扫描@Controller注解。 --> <context:component-scan base-package="com.thinkgem.jeesite,com.allinpay"><!-- base-package 如果多个，用“,”分隔 --> <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/> </context:component-scan> <!-- MyBatis begin --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource"/> <property name="typeAliasesPackage" value="com.thinkgem.jeesite"/> <property name="typeAliasesSuperType" value="com.thinkgem.jeesite.common.persistence.BaseEntity"/> <property name="mapperLocations" value="classpath:/mappings/**/*.xml"/> <property name="configLocation" value="classpath:/mybatis-config.xml"></property> </bean> <!-- 扫描basePackage下所有以@MyBatisDao注解的接口 --> <bean id="mapperScannerConfigurer" class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" /> <property name="basePackage" value="com.thinkgem.jeesite"/> <property name="annotationClass" value="com.thinkgem.jeesite.common.persistence.annotation.MyBatisDao"/> </bean> <!-- 定义事务 --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource" /> </bean> <!-- 配置 Annotation 驱动，扫描@Transactional注解的类定义事务 --> <tx:annotation-driven transaction-manager="transactionManager" proxy-target-class="true"/> <!-- MyBatis end --> <!-- 配置 JSR303 Bean Validator 定义 --> <bean id="validator" class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean" /> <!-- 缓存配置 --> <bean id="cacheManager" class="org.springframework.cache.ehcache.EhCacheManagerFactoryBean"> <property name="configLocation" value="classpath:${ehcache.configFile}" /> </bean> <!-- 计划任务配置，用 @Service @Lazy(false)标注类，用@Scheduled(cron = "0 0 2 * * ?")标注方法 --> <task:executor id="executor" pool-size="10"/> <task:scheduler id="scheduler" pool-size="10"/> <task:annotation-driven scheduler="scheduler" executor="executor" proxy-target-class="true"/> <!-- 数据源配置, 使用 BoneCP 数据库连接池 --> <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close"> <!-- 数据源驱动类可不写，Druid默认会自动根据URL识别DriverClass --> <property name="driverClassName" value="${jdbc.driver}" /> <!-- 基本属性 url、user、password --> <property name="url" value="${jdbc.url}" /> <property name="username" value="${jdbc.username}" /> <property name="password" value="${jdbc.password}" /> <!-- 配置初始化大小、最小、最大 --> <property name="initialSize" value="${jdbc.pool.init}" /> <property name="minIdle" value="${jdbc.pool.minIdle}" /> <property name="maxActive" value="${jdbc.pool.maxActive}" /> <!-- 配置获取连接等待超时的时间 --> <property name="maxWait" value="60000" /> <!-- 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒 --> <property name="timeBetweenEvictionRunsMillis" value="60000" /> <!-- 配置一个连接在池中最小生存的时间，单位是毫秒 --> <property name="minEvictableIdleTimeMillis" value="300000" /> <property name="validationQuery" value="${jdbc.testSql}" /> <property name="testWhileIdle" value="true" /> <property name="testOnBorrow" value="false" /> <property name="testOnReturn" value="false" /> <!-- 打开PSCache，并且指定每个连接上PSCache的大小（Oracle使用） <property name="poolPreparedStatements" value="true" /> <property name="maxPoolPreparedStatementPerConnectionSize" value="20" /> --> <!-- 配置监控统计拦截的filters --> <property name="filters" value="stat" /> </bean> <!-- 数据源配置, 使用应用服务器的数据库连接池 <jee:jndi-lookup id="dataSource" jndi-name="java:comp/env/jdbc/jeesite" />--> <!-- 数据源配置, 不使用连接池 <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"> <property name="driverClassName" value="${jdbc.driver}" /> <property name="url" value="${jdbc.url}" /> <property name="username" value="${jdbc.username}"/> <property name="password" value="${jdbc.password}"/> </bean>--> <bean id="startupListener" class="com.thinkgem.jeesite.modules.sys.listener.StartupListener"/> <bean id="Scheduler" class="org.springframework.scheduling.quartz.SchedulerFactoryBean" /> <import resource="spring-tasks.xml"/> </beans>
spring-context.xml 配置在web.xml 里面
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5"> <display-name>wanxiuAdmin</display-name> <!-- Context ConfigLocation --> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath*:/spring-context*.xml</param-value> </context-param> <listener> <listener-class>com.thinkgem.jeesite.modules.sys.listener.WebContextListener</listener-class> </listener> <listener> <listener-class>org.springframework.web.context.request.RequestContextListener</listener-class> </listener> <filter> <filter-name>encodingFilter</filter-name> <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> <init-param> <param-name>encoding</param-name> <param-value>UTF-8</param-value> </init-param> <init-param> <param-name>forceEncoding</param-name> <param-value>true</param-value> </init-param> </filter> <filter-mapping> <filter-name>encodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!-- Apache Shiro --> <filter> <filter-name>shiroFilter</filter-name> <filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class> <init-param> <param-name>targetFilterLifecycle</param-name> <param-value>true</param-value> </init-param> </filter> <filter-mapping> <filter-name>shiroFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!-- PageCache, cache .html suffix. <filter> <filter-name>PageCacheFilter</filter-name> <filter-class>com.thinkgem.jeesite.common.filter.PageCachingFilter</filter-class> </filter> <filter-mapping> <filter-name>PageCacheFilter</filter-name> <url-pattern>/</url-pattern> </filter-mapping> <filter-mapping> <filter-name>PageCacheFilter</filter-name> <url-pattern>*.html</url-pattern> </filter-mapping>--> <!-- SiteMesh --> <filter> <filter-name>sitemeshFilter</filter-name> <filter-class>com.opensymphony.sitemesh.webapp.SiteMeshFilter</filter-class> </filter> <filter-mapping> <filter-name>sitemeshFilter</filter-name> <url-pattern>/a/*</url-pattern> </filter-mapping> <filter-mapping> <filter-name>sitemeshFilter</filter-name> <url-pattern>/f/*</url-pattern> </filter-mapping> <!-- MVC Servlet --> <servlet> <servlet-name>springServlet</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath*:/spring-mvc*.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>springServlet</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <!-- Activiti --> <servlet> <servlet-name>RestletServlet</servlet-name> <servlet-class>org.restlet.ext.servlet.ServerServlet</servlet-class> <init-param> <param-name>org.restlet.application</param-name> <param-value>com.thinkgem.jeesite.modules.act.rest.ActRestApplication</param-value> </init-param> </servlet> <servlet-mapping> <servlet-name>RestletServlet</servlet-name> <url-pattern>/act/rest/service/*</url-pattern> </servlet-mapping> <!-- DruidStatView --> <servlet> <servlet-name以上是关于调用百度汇率api 获取各国的汇率值的主要内容，如果未能解决你的问题，请参考以下文章