Simplified Multiple Condition Judgment Query (1)

Simplifies the judgment of multiple if conditional statements, so that the judgment of multiple conditions query is simpler, no longer for the condition is empty and worry, here is only a template, specific examples also need to mediate their own

One: Create a list collection and load the list data

List listsql = new ArrayList ();

String sql = "";

Listsql.add ("Cxusers");
Listsql.add (txthphm==null "": TXTHPHM)//judge whether the resulting content is empty, empty will be marked as empty characters, on the other hand, is the foreground page passed the value of
listsql.add (txthpzl==null? ") : TXTHPZL);
Listsql.add (txtwfsjs==null "": TXTWFSJS);
Listsql.add (txtwfswje==null "": txtwfswje);
		
Listsql.add (zhxxcx==null "": ZHXXCX);//Comprehensive information Mark
Listsql.add (txtwfdd==null? "": TXTWFDD);//illegal location
mark Listsql.add (xq==null "": XQ);/district Mark
listsql.add (txetjdry==null? "": txetjdry);/Proofing Staff Mark

Two: Getzhxxsql method, used to execute conditional SQL statements

Public String getzhxxsql (List list) {//list StringBuffer sql = new StringBuffer (); if ("Cxusers". Equals (List.get (0). toString ())) {sql.append ("SELECT count (*) from nlv_violation t where 1=1 and T.JDZT =
			' 2 ' and t.jllx= ' 1 '); if (List.size () >1) {if (! "").
			Equals (List.get (1). ToString ())) {//If not NULL, executes this statement instead of Sql.append ("and t.hphm like '%" +list.get (1). ToString () + "%"); } if (List.size () >2) {if (!).
			Equals (List.get (2). ToString ())) {Sql.append ("and T.hpzl= '" +list.get (2). ToString () + "'"); } if (List.size () >3) {if (!). Equals (List.get (3). ToString ())) {Sql.append ("and To_char (T.WFSJ, ' yyyy-mm-dd ') >= '" +list.get (3). ToString () + "'")
				; } if (List.size () >4) {if (!). Equals (List.get (4). ToString ())) {Sql.append ("and To_char (T.WFSJ, ' yyyy-mm-dd ') <= '" +list.get (4). ToString () + "'")
				; } if (List.size () >5) {if (!). Equals (List.get (5). toString ())) {Sql.append ("and t.sjly= '" +list.get (5). TostrING () + "'"); } if (List.size () >6) {if (!).
				Equals (List.get (6). ToString ())) {Sql.append ("and t.wfdd like '%" +list.get (6). ToString () + "%"); } if (List.size () >7) {if (!).
				Equals (List.get (7). ToString ())) {Sql.append ("and t.cjjg= '" +list.get (7). ToString () + "'"); } if (List.size () >8) {if (!).
					Equals (List.get (8). ToString ())) {Sql.append ("and T.jdr= '" +list.get (8). ToString () + "'");
}} return sql.tostring (); }