我正在进行概念验证，以便将XML值插入Oracle数据库。我在Java中使用StringBuilder来插入值。我的Camel背景是：
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
http://camel.apache.org/schema/spring http://camel.apache.org/schema/spring/camel-spring.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
<bean id="dataSource" class="org.springframework.jdbc.datasource">
<property name="driverClassName" value="oracle.jdbc.driver.OracleDriver"/>
<property name="url" value="jdbc:oracle:thin:@127.0.0.1:1521:xe"/>
<property name="username" value="system"/>
<property name="password" value="1234"/>
</bean>
<bean id="orderToSQL" class="camel.project.camel.system.OrderToSQLBean" />
<camelContext xmlns="http://camel.apache.org/schema/spring">
<route>
<from uri="file:src/data?noop=true"/>
<choice>
<when>
<xpath>/person/city = 'London'</xpath>
<log message="UK message"/>
<to uri="file:target/messages/uk"/>
</when>
<when>
<xpath>/person/city = 'Charleston'</xpath>
<log message="US message"/>
<to uri="bean:orderToSQL?method=toSql"/>
</when>
<otherwise>
<log message="Other message"/>
<to uri="file:target/messages/others"/>
</otherwise>
</choice>
</route>
</camelContext>
</beans>
因此，无论何时出现与城市查尔斯顿的消息，我都必须将该XML中的数据写入Oracle数据库。我正在使用Java类，如下所示。它不会抛出任何类型的错误，但它无法将值插入数据库。
package camel.project.camel.system;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
import java.sql.Statement;
import javax.sql.DataSource;
import org.apache.camel.language.XPath;
public class OrderToSQLBean {
/**
* @param args
*/
public static void main(String[] args) {
try {
Class.forName("oracle.jdbc.driver.OracleDriver" );
} catch (Exception e) {
System.err.println("ERROR: failed to load JDBC driver.");
e.printStackTrace();
}
try {
Connection c = DriverManager.getConnection("jdbc:oracle:thin:@127.0.0.1:1521:xe","system","tcs#1234");
Statement st = null;
ResultSet rs = null;
st = c.createStatement();
rs = st.executeQuery("SELECT *from people;");
dump(rs);
st.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
public static void dump(ResultSet rs) throws SQLException {
ResultSetMetaData meta = rs.getMetaData();
int colmax = meta.getColumnCount();
int i;
Object o = null;
for (; rs.next(); ) {
for (i = 0; i < colmax; ++i) {
o = rs.getObject(i + 1);
System.out.print(o.toString() + " ");
}
System.out.println(" ");
}
}
public String toSql(@XPath("person/firstName") String firstName,
@XPath("person/lastName") String lastName,
@XPath("person/city") String city)
{
StringBuilder sb = new StringBuilder();
sb.append("insert into people");
sb.append("(country, lastname, firstname, city) values (");
sb.append("'US', ");
sb.append("'").append(lastName).append("', ");
sb.append("'").append(firstName).append("', ");
sb.append("'").append(city).append("'); ");
System.out.println("String = " +sb);
return sb.toString();
}
}
这是我在控制台中输出的输出：
[INFO] Using org.apache.camel.spring.Main to initiate a CamelContext
[pache.camel.spring.Main.main()] MainSupport INFO Apache Camel 2.10.0.redhat-60024 starting
[pache.camel.spring.Main.main()] ClassPathXmlApplicationContext INFO Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@2cbe08: startup date [Fri Sep 05 15:50:42 IST 2014]; root of context hierarchy
[pache.camel.spring.Main.main()] XmlBeanDefinitionReader INFO Loading XML bean definitions from file [C:\Users\761285\Desktop\New Workspace\camel-system\target\classes\META-INF\spring\configuration.xml]
[pache.camel.spring.Main.main()] XmlBeanDefinitionReader INFO Loading XML bean definitions from file [C:\Users\761285\Desktop\New Workspace\camel-system\target\classes\META-INF\spring\xmltodb-context.xml]
[pache.camel.spring.Main.main()] DefaultListableBeanFactory INFO Overriding bean definition for bean 'dataSource': replacing [Generic bean: class [org.apache.commons.dbcp.BasicDataSource]; scope=; abstract=false; lazyInit=false; autowireMode=0; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=null; factoryMethodName=null; initMethodName=null; destroyMethodName=close; defined in file [C:\Users\761285\Desktop\New Workspace\camel-system\target\classes\META-INF\spring\configuration.xml]] with [Generic bean: class [org.springframework.jdbc.datasource.SingleConnectionDataSource]; scope=; abstract=false; lazyInit=false; autowireMode=0; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=null; factoryMethodName=null; initMethodName=null; destroyMethodName=null; defined in file [C:\Users\761285\Desktop\New Workspace\camel-system\target\classes\META-INF\spring\xmltodb-context.xml]]
[pache.camel.spring.Main.main()] DefaultListableBeanFactory INFO Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@10b2840: defining beans [dataSource,orderToSQL,template,consumerTemplate,camel-1:beanPostProcessor,camel-1]; root of factory hierarchy
[pache.camel.spring.Main.main()] SingleConnectionDataSource INFO Loaded JDBC driver: oracle.jdbc.driver.OracleDriver
[pache.camel.spring.Main.main()] SpringCamelContext INFO Apache Camel 2.10.0.redhat-60024 (CamelContext: camel-1) is starting
[pache.camel.spring.Main.main()] ManagementStrategyFactory INFO JMX enabled.
[pache.camel.spring.Main.main()] DefaultTypeConverter INFO Loaded 175 type converters
[pache.camel.spring.Main.main()] FileEndpoint INFO Endpoint is configured with noop=true so forcing endpoint to be idempotent as well
[pache.camel.spring.Main.main()] FileEndpoint INFO Using default memory based idempotent repository with cache max size: 1000
[pache.camel.spring.Main.main()] XPathBuilder INFO Created default XPathFactory com.sun.org.apache.xpath.internal.jaxp.XPathFactoryImpl@1b792e0
[pache.camel.spring.Main.main()] SpringCamelContext INFO Route: route1 started and consuming from: Endpoint[file://src/data?noop=true]
[pache.camel.spring.Main.main()] ultManagementLifecycleStrategy INFO StatisticsLevel at All so enabling load performance statistics
[pache.camel.spring.Main.main()] SpringCamelContext INFO Total 1 routes, of which 1 is started.
[pache.camel.spring.Main.main()] SpringCamelContext INFO Apache Camel 2.10.0.redhat-60024 (CamelContext: camel-1) started in 0.319 seconds
[1) thread #0 - file://src/data] route1 INFO UK message
[1) thread #0 - file://src/data] route1 INFO Other message
[1) thread #0 - file://src/data] route1 INFO US message
我打印字符串我通过stringbuilder获取生成的查询是正确的oracle数据库查询语法
String = insert into people(country, lastname, firstname, city) values ('US', 'Peeples', 'Kenneth', 'Charleston');
请帮我解决这个问题。我没有使用任何蓝图XML。
答案 0 :(得分：0)
你没有看到任何错误，这很奇怪。你的select和insert都有一个颤音的分号;这是一个语句分隔符，无效。你的插入应该是：
String = insert into people(country, lastname, firstname, city)
values ('US', 'Peeples', 'Kenneth', 'Charleston')
...没有分号。从您的选择中删除一个，这也需要在from：
st.executeQuery("SELECT * from people");
对于这两个语句，你应该得到ORA-00911，所以也许它根本就没有尝试执行它们。你正在返回sb，但我不熟悉Camel，所以我不知道什么时候或者是否实际执行了你返回的内容，或者你是否应该在{{1}内执行方法。
您还应该使用预准备语句和绑定变量，而不是通过StringBuilder将固定值放入字符串中，但这稍微超出了问题的范围。您应该阅读SQL注入。