我正在尝试使用java代码将数组插入到postgres中,但是我总是会收到此错误:
SEVERE [http-nio-8080-exec-2]org.apache.catalina.core.StandardWrapperValve.invoke Servlet.service()
for servlet [] in context with path [/] threw exception
[Servlet execution threw an exception] with root cause
java.lang.AbstractMethodError:
com.mchange.v2.c3p0.impl.NewProxyConnection.createArrayOf(Ljava/lang/String;[Ljava/lang/Object;)Ljava/sql/Array;
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使用的代码
pst = getConnection().prepareStatement(INSERT_QUERY,PreparedStatement.RETURN_GENERATED_KEYS);
pst.setString(1, t.getname());
pst.setString(2, t.getEmail());
Array itemIds = conn.createArrayOf("bigint", t.getItemIds());
pst.setArray(3, itemIds);
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如果我通过主类运行该函数,则可以正常运行,但在将其部署到tomcat服务器后,http调用将失败,并出现上述错误。
根据我所做的研究,createArrayOf()应该与jdbc4和c3p0-0.9.5一起使用。
使用此方法效果很好,但我认为它不是正确的方法
if (conn instanceof C3P0ProxyConnection) {
C3P0ProxyConnection proxy = (C3P0ProxyConnection) conn;
try {
Method m = Connection.class.getMethod("createArrayOf", String.class, Object[].class);
Object[] args = { "bigint", t.getItemIds() };
itemIds = (Array) proxy.rawConnectionOperation(m, C3P0ProxyConnection.RAW_CONNECTION, args);
} catch (IllegalArgumentException …Run Code Online (Sandbox Code Playgroud)