遇到空值時出現Java結果集錯誤

我有一些將查詢結果集放入2維數組的代碼。但是，當數組遇到結果集中的空值時，它會出錯。我該如何解決？遇到空值時出現Java結果集錯誤

query = "SELECT * FROM E_CMS WHERE BOXADDR_AREA IS NULL ORDER BY CBOXID ASC "; 
    rs = stmt.executeQuery(query); 

    //insert the table into the 2 dimensional array 
    while (rs.next()) { 
    e_cms_Array[count][0] = rs.getString("CBOXID"); 
    e_cms_Array[count][1] = rs.getString("CBOXADD").replace("'",""); 
    e_cms_Array[count][2] = rs.getString("MFLPU"); 
    e_cms_Array[count][3] = rs.getString("SATLPU"); 
    e_cms_Array[count][4] = rs.getString("BOXTYPE"); 
    e_cms_Array[count][5] = rs.getString("SVCCLASS"); 
    e_cms_Array[count][6] = rs.getString("LOCATION_TYPE").replace("'",""); 
    e_cms_Array[count][7] = rs.getString("CHANGE_DATE"); 
    e_cms_Array[count][8] = rs.getString("DEL_FLAG"); 
    e_cms_Array[count][9] = rs.getString("DECAL_PRINT_DT"); 
    e_cms_Array[count][10] = rs.getString("BOXADDR_AREA").replace("'",""); 
    e_cms_Array[count][11] = rs.getString("LASTMF_AREA_O"); 
    e_cms_Array[count][12] = rs.getString("LASTSAT_AREA_O"); 

    System.out.println(count + " :: " + 
     e_cms_Array[count][0]+"|"+ 
     e_cms_Array[count][1]+"|"+ 
     e_cms_Array[count][2]+"|"+ 
     e_cms_Array[count][3]+"|"+ 
     e_cms_Array[count][4]+"|"+ 
     e_cms_Array[count][5]+"|"+ 
     e_cms_Array[count][6]+"|"+ 
     e_cms_Array[count][7]+"|"+ 
     e_cms_Array[count][8]+"|"+ 
     e_cms_Array[count][9]+"|"+ 
     e_cms_Array[count][10]+"|"+ 
     e_cms_Array[count][11]+"|"+ 
     e_cms_Array[count][12]); 

    count++; 
    }

來源

2011-08-22 Mike

什麼是錯誤信息和堆棧跟蹤？ –

@JB Nizet'顯示java.lang.NullPointerException \t在forecast_transmission.get_e_cms（forecast_transmission.java:106） \t在forecast_transmission.main（forecast_transmission.java:44）' – Mike

請提供的完整代碼或SSCCE。向數組中添加空值會導致錯誤是不可能的。 – Heisenbug

沒有理由的錯誤，除了你做這樣

e_cms_Array[count][1] = rs.getString("CBOXADD").replace("'","");

事情就由

String s = rs.getString("CBOXADD"); 
    e_cms_Array[count][1] = s==null ? s : s.replace("'","");

取代它，或寫的更好了這種更換空容錯方法。

來源

2011-08-22 21:54:08 maaartinus

啊，當然，有時需要另一雙眼睛才能注意到你面前的東西，謝謝 – Mike

如果這解決了問題，你應該檢查它並投票:) – tylerthemiler

我有史以來最容易贏得的聲譽。 :) – maaartinus

遇到空值時出現Java結果集錯誤

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