Java valueof (int) with integercache returns a value of 3 (1) for valueof

I face the problem of integercache:

Just call the database program

{ call UPDATE_PROC(?,?,?)  }
with params : [123,234,345,TEST1,567,TEST2]

The ibatis API sets the first parameter using:

typeHandler.setParameter(ps,i + 1,value,mapping.getJdbcTypeName());

Here PS is the reference to Preparedstatement, and I is the parameter index in the database process

It calls internally

ps.setInt(i,((Integer) parameter).intValue());

Call this call internally using the java reflection API:

public Object invoke(Object proxy,Method method,Object[] params) throws Throwable

When getting the integer value of I for a method call, the JVM calls the following method:

public static Integer valueOf(int i) {
    assert IntegerCache.high >= 127;
    if (i >= IntegerCache.low && i <= IntegerCache.high)
        return IntegerCache.cache[i + (-IntegerCache.low)];
    return new Integer(i);
}

IntegerCache. The value of cache [I (- integercache. Low)] is expressed as integercache Cache [129] ends. The integer cache index [129] should have a value of 1, but when I debug the code, I find the value 3 [129] at the index:

,-8,-7,-6,-5,-4,-3,-2,-1,3 **index[129]**,2,3 **index[131]**,4,5,6,7,8,9,10,11

Because integercache is the final type, there should be no duplicate values, such as 3 indexes [129] and [131]

So I finally have an exception:

java.sql.sqlException: Missing IN or OUT parameter at index:: 1

My question is how to do this? Please suggest

Solution

Some code may change the integer of the cache instance through reflection Value field