如何修复这个带有PostgreSQL的Java错误（表不存在）？

Question

我的java代码。

String url = "jdbc:postgresql://localhost:5432/postgres";
String user = "postgres";
String password = "1111"; 
String status=Status,when=When,code=Code,msg=Msg,description=Description,elapsed=Elapsed,mhs_av=MHS_av,mhs_5s=MHS_5s,mhs_1m=MHS_1m,mhs_5m=MHS_5m,mhs_15m=MHS_15m,found_blocks=Found_Blocks,getworks=Getworks,accepted=Accepted,rejected=Rejected;
String hardware_errors=Hardware_Errors,utility=Utility,discarded=Discarded,stale=Stale,get_failures=Get_Failures,local_work=Local_Work,remote_failures=Remote_Failures;
String network_blocks=Network_Blocks,total_mh=Total_MH,work_utility=Work_Utility,difficulty_accepted=Difficulty_Accepted,difficulty_rejected=Difficulty_Rejected,difficulty_stale=Difficulty_Stale;
String best_share=Best_Share,device_hardware=Device_Hardware,device_rejected=Device_Rejected,pool_rejected=Pool_Rejected,pool_stale=Pool_Stale,last_getwork=Last_Getwork;

String query = "INSERT INTO SUMMARY(status,whn,code,msg,description,elapsed,mhs_av,mhs_5s,mhs_1m,mhs_5m,mhs_15m,found_blocks,get_works,accepted,rejected,"
        + "hardware_errors,utility,discarded,stale,get_failures,local_work,remote_failures,network_blocks,total_mh,work_utility,difficulty_accepted,difficulty_rejected,"
        + "difficulty_stale,best_share,device_hardware,device_rejected,pool_rejected,pool_stale,last_getwork) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)";

try (Connection con = DriverManager.getConnection(url, user, password);
                PreparedStatement pst = con.prepareStatement(query)) {
                pst.setString(1,status);
                pst.setString(2,when); pst.setString(3, code);  pst.setString(4, msg); pst.setString(5,description); pst.setString(6,elapsed); pst.setString(7, mhs_av); pst.setString(8, mhs_5s);
                pst.setString(9,mhs_1m); pst.setString(10, mhs_5m); pst.setString(11, mhs_15m); pst.setString(12, found_blocks); pst.setString(13, getworks); pst.setString(14, accepted);
                pst.setString(15, rejected); pst.setString(16, hardware_errors); pst.setString(17,utility); pst.setString(18, discarded); pst.setString(19, stale); pst.setString(20, get_failures);
                pst.setString(21, local_work); pst.setString(22, remote_failures); pst.setString(23, network_blocks); pst.setString(24, total_mh); pst.setString(25, work_utility); 
                pst.setString(26, difficulty_accepted); pst.setString(27, difficulty_rejected); pst.setString(28, difficulty_stale); pst.setString(29, best_share); 
                pst.setString(30, device_hardware); pst.setString(31, device_rejected); pst.setString(32, pool_rejected); pst.setString(33, pool_stale); pst.setString(34, last_getwork);
                pst.executeUpdate();

                } catch (SQLException ex) {

                    Logger lgr = Logger.getLogger(Parse.class.getName());
                    lgr.log(Level.SEVERE, ex.getMessage(), ex);
                }

我总是犯这个错误

Kas 26,2018 2:32:44 PM Parse.Summary sum Severe：错误：关系“Summary”不存在位置：13 org.postgresql.util.psqlexeption：错误：关系“Summary”不存在位置：13 org.postgresql.core.v3.queryexecutorimpl.receiveerrorresponse(queryexecutorimpl.java:2440)org.postgresql.core.v3.queryexecutorimpl.processresponse(queryexecutorimpl.java:2183)

Answer 1

错误消息可能由以下几个因素引起：

>

您连接到错误的主机、端口或数据库，并且那里没有表摘要。

您在正确的数据库中，但表summary所处的架构不在search_path中。