<servlet>  
        <servlet-name>DruidStatView</servlet-name>  
        <servlet-class>com.alibaba.druid.support.http.StatViewServlet</servlet-class>  
</servlet>  
<servlet-mapping>  
        <servlet-name>DruidStatView</servlet-name>  
        <url-pattern>/druid/*</url-pattern>  
 </servlet-mapping>

public void setFilters(String filters) throws SQLException {
        if (filters != null && filters.startsWith("!")) {
            filters = filters.substring(1);
            this.clearFilters();
        }
        this.addFilters(filters);
    }
    public void addFilters(String filters) throws SQLException {
        if (filters == null || filters.length() == 0) {
            return;
        }
        String[] filterArray = filters.split("\\,");
        for (String item : filterArray) {
            FilterManager.loadFilter(this.filters, item.trim());
        }
    }

 public static void loadFilter(List<Filter> filters, String filterName) throws SQLException {
        if (filterName.length() == 0) {
            return;
        }
        String filterClassNames = getFilter(filterName);
        if (filterClassNames != null) {
            for (String filterClassName : filterClassNames.split(",")) {
                if (existsFilter(filters, filterClassName)) {
                    continue;
                }
                Class<?> filterClass = Utils.loadClass(filterClassName);
                if (filterClass == null) {
                    LOG.error("load filter error, filter not found : " + filterClassName);
                    continue;
                }
                Filter filter;
                try {
                    filter = (Filter) filterClass.newInstance();
                } catch (ClassCastException e) {
                    LOG.error("load filter error.", e);
                    continue;
                } catch (InstantiationException e) {
                    throw new SQLException("load managed jdbc driver event listener error. " + filterName, e);
                } catch (IllegalAccessException e) {
                    throw new SQLException("load managed jdbc driver event listener error. " + filterName, e);
                }
                filters.add(filter);
            }
            return;
        }
        if (existsFilter(filters, filterName)) {
            return;
        }
        Class<?> filterClass = Utils.loadClass(filterName);
        if (filterClass == null) {
            LOG.error("load filter error, filter not found : " + filterName);
            return;
        }
        try {
            Filter filter = (Filter) filterClass.newInstance();
            filters.add(filter);
        } catch (Exception e) {
            throw new SQLException("load managed jdbc driver event listener error. " + filterName, e);
        }
    }

public <T> T query(
            PreparedStatementCreator psc, final PreparedStatementSetter pss, final ResultSetExtractor<T> rse)
            throws DataAccessException {
        Assert.notNull(rse, "ResultSetExtractor must not be null");
        logger.debug("Executing prepared SQL query");
        return execute(psc, new PreparedStatementCallback<T>() {
            @Override
            public T doInPreparedStatement(PreparedStatement ps) throws SQLException {
                ResultSet rs = null;
                try {
                    if (pss != null) {
                        pss.setValues(ps);
                    }
                    rs = ps.executeQuery();
                    ResultSet rsToUse = rs;
                    if (nativeJdbcExtractor != null) {
                        rsToUse = nativeJdbcExtractor.getNativeResultSet(rs);
                    }
                    return rse.extractData(rsToUse);
                }
                finally {
                    JdbcUtils.closeResultSet(rs);
                    if (pss instanceof ParameterDisposer) {
                        ((ParameterDisposer) pss).cleanupParameters();
                    }
                }
            }
        });
    }

public ResultSet executeQuery() throws SQLException {
        checkOpen();
        incrementExecuteCount();
        transactionRecord(sql);
        oracleSetRowPrefetch();
        conn.beforeExecute();
        try {
            ResultSet rs = stmt.executeQuery();
            if (rs == null) {
                return null;
            }
            DruidPooledResultSet poolableResultSet = new DruidPooledResultSet(this, rs);
            addResultSetTrace(poolableResultSet);
            return poolableResultSet;
        } catch (Throwable t) {
            errorCheck(t);
            throw checkException(t);
        } finally {
            conn.afterExecute();
        }
    }

public ResultSet executeQuery() throws SQLException {
        firstResultSet = true;
        updateCount = null;
        lastExecuteSql = sql;
        lastExecuteType = StatementExecuteType.ExecuteQuery;
        lastExecuteStartNano = -1L;
        lastExecuteTimeNano = -1L;
        return createChain().preparedStatement_executeQuery(this);
    }

 public FilterChainImpl createChain() {
        FilterChainImpl chain = this.filterChain;
        if (chain == null) {
            chain = new FilterChainImpl(this.getConnectionProxy().getDirectDataSource());
        } else {
            this.filterChain = null;
        }
        return chain;
    }

@Override
    public ResultSetProxy preparedStatement_executeQuery(PreparedStatementProxy statement) throws SQLException {
        if (this.pos < filterSize) {
            return nextFilter().preparedStatement_executeQuery(this, statement);
        }
        ResultSet resultSet = statement.getRawObject().executeQuery();
        if (resultSet == null) {
            return null;
        }
        return new ResultSetProxyImpl(statement, resultSet, dataSource.createResultSetId(),
                statement.getLastExecuteSql());
    }

public ResultSetProxy preparedStatement_executeQuery(FilterChain chain, PreparedStatementProxy statement)
                                                                                                             throws SQLException {
        try {
            statementExecuteQueryBefore(statement, statement.getSql());
            ResultSetProxy resultSet = chain.preparedStatement_executeQuery(statement);
            if (resultSet != null) {
                statementExecuteQueryAfter(statement, statement.getSql(), resultSet);
                resultSetOpenAfter(resultSet);
            }
            return resultSet;
        } catch (SQLException error) {
            statement_executeErrorAfter(statement, statement.getSql(), error);
            throw error;
        } catch (RuntimeException error) {
            statement_executeErrorAfter(statement, statement.getSql(), error);
            throw error;
        } catch (Error error) {
            statement_executeErrorAfter(statement, statement.getSql(), error);
            throw error;
        }
    }

buildFooter : function() {
            var html =\'<footer class="footer">\'+
                      \'            <div class="container">\'+
                      \'<a href="https://render.alipay.com/p/s/taobaonpm_click/druid_banner_click" target="new"><img src="https://render.alipay.com/p/s/taobaonpm_click/druid_banner"></a><br/>\' +
                        \'    powered by <a href="https://github.com/alibaba/" target="_blank">AlibabaTech</a> & <a href="http://www.sandzhang.com/" target="_blank">sandzhang</a> & <a href="http://melin.iteye.com/" target="_blank">melin</a> & <a href="https://github.com/shrekwang" target="_blank">shrek.wang</a>\'+
                        \'            </div>\'+
                      \' </footer>\';
            $(document.body).append(html);
        },