我正在为此application编写自定义控制器。你可以在/ ssf / samples / customcontroller下找到一个样本。对于我的customcontroller,我使用了Spring-Framework,它也被kablink项目使用。现在我尝试通过getSimpleJdbcTemplate().queryForObject(query, String.class, new MapSqlParameterSource());
执行sql脚本(my.sql)。 sql文件只包含一行select label from question where questionid=3;
但是我通过读取my.sql文件遇到了困难。在Controller中,我调用方法graph.sunburstJson()
并将返回值推送到视图:
ApplicationContext context = new ClassPathXmlApplicationContext("/resources/spring/config/GraphBean.xml");
GraphDao graph = (GraphDao) context.getBean("graphDao");
response.setRenderParameter("json", graph.sunburstJson());
要查看方法sunburstJson是否读取文件,我尝试返回my.sql的内容:
public class GraphDaoImpl extends SimpleJdbcDaoSupport implements GraphDao{
@Override
public String sunburstJson() {
String query="select label from question where questionid=5";
try {
InputStream is = getClass().getResourceAsStream("/resources/spring/sql/my.sql");
BufferedReader reader = new BufferedReader(new InputStreamReader(is));
LineNumberReader fileReader = new LineNumberReader(reader);
query = JdbcTestUtils.readScript(fileReader);
} catch (IOException e) {
StringWriter errors = new StringWriter();
e.printStackTrace(new PrintWriter(errors));
query=errors.toString()+"help";
}
return query+"test";//(String)getSimpleJdbcTemplate().queryForObject(query, String.class, new MapSqlParameterSource());
}
}
但它没有返回任何错误,没有输出,我无法解释发生了什么。这从第JdbcTestUtils.readScript
行开始。与
EncodedResource resource = new EncodedResource(context.getResource("/resources/spring/sql/my.sql"), "UTF-8");
如果我尝试
BufferedReader reader = new BufferedReader(new FileReader(new File("resources/spring/sql/my.sql")));
//or
BufferedReader reader = new BufferedReader(new FileReader("/resources/spring/sql/my.sql"));
我找到了一个未找到异常堆栈跟踪的文件。