一、初始化

1,直接调用

import java.util.concurrent.ThreadPoolExecutor.CallerRunsPolicy;

import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
/**
* Hello world!
*
*/
public class App
{
public static void main( String[] args )
{
ThreadPoolTaskExecutor poolTaskExecutor = new ThreadPoolTaskExecutor();
//线程池所使用的缓冲队列
poolTaskExecutor.setQueueCapacity(10);
//线程池维护线程的最少数量
poolTaskExecutor.setCorePoolSize(2);
//线程池维护线程的最大数量
poolTaskExecutor.setMaxPoolSize(3);
//线程池维护线程所允许的空闲时间
poolTaskExecutor.setKeepAliveSeconds(300); poolTaskExecutor.setRejectedExecutionHandler(new CallerRunsPolicy());
poolTaskExecutor.initialize(); for (int i = 0; i < 25; i++) {
MessagePrinterTask m=new MessagePrinterTask("Message" + i);
poolTaskExecutor.execute(m);
System.out.println("add Thread:"+i);
} }
}

结果是

aaarticlea/png;base64,iVBORw0KGgoAAAANSUhEUgAAAJoAAAI3CAIAAADsgNVZAAARUklEQVR4nO2dTbqqyrJFbRcNoj1Ub2034n7045btxOsBr6Bg/kQm6GItIyZjfKdwFhuT0GkixAC9/fv37/9W/v3795///u8///3fAicyj8tt3P5Ybrdl/q1N3Yjz97kvw225rf9N99/bEnFKQZxSEKcUP4vzPg23sfxcNxfuMI9vP+QdPikpJH8d530abjnDdPcS56u44TePV36Rb83OIj8Pcc7jbV0p7GzeiXMeX9Po9fyyKbYuNhc2seJcN7ZNjXm8jdM2rLGhbYg36uxUtG748biIeR6ena83rPkufvetXcd5q0eax1e26wPSByYJHK2zybbKY6OTMXQA9uJM3/bb092eaPoa1At7tHe2ycONXXD52ZukfaTONo9VtreA9U4JQD/OYgfkIE77ZT5cZ6e4eUzeHVE/PLtx3qdhfYKvveFrYfIRYy7s8Wmc6S5043idOyWlcz1imocPhYZp2l7bbYc3znN/YZuP48z3t9W+dq/Og2dREXe0y0JXSAzilII4pSBOKYhTCuKUAkEmBYLMqC5u8giytIZhuseeyAiyAuk4X6gLsvrxEUGQFSjHeSVBtrxRvVsQZAXCcV5LkGX76+P5u4KukBTEKQVxSkGcUhCnFMQpBYJMCgSZWdw1L8yUEmT3aUj6DzEDRZA1qou5c0aQdZ9rNBBkVmlBw0SQFdynIW6WC4KsHCZylguCzB727WMnL9AVkoI4pSBOKYhTCuKUgjilQJBJgSB7kTQKY/oUBFlz9ZiBIsgM4u6bEWRFVaH3tQiyVnUxpyeCrFVeyBmKIGtUFzJNBFlWQzlsOOgKSUGcUhCnFMQpBXFKQZxSIMikQJDZFQYNH0GWM4+3YRzDzmUEWVFV7C/NRJBlRQzTPfQnLYKsLkE2zusIsvoQLWQjHkFWIzs7LyXIsg1oxgmxIE4piFMK4pSCOKUgTikQZFIgyBqlxUwfQfbeSs5BkC3p2uJxvtAXZFbzMBoIMoP7FPXb3BBkFmFvv0aQ2cXFTBNBZo4bM8uFrpAYxCkFcUpBnFIQpxTEKQWCTAoEWU5yAhvx1BNBlq8VM8UNBFlaQ/AwEWTZA4dpXt8AQYNFkGUjJ8OFDBRBtnKfhmTkX/4w/y0QZNkoyc5ZcHZeSpDZB1mxoCskBXFKQZxSEKcUxCkFcUqBIJMCQbaStQmjnnoiyEw0e7aXEmQv4u6bEWRmbSGn5oIgq4k7NRcEWUlYl/IAQbY7eiQQZMXIgafmQldIDOKUgjilIE4piFMK4pQCQSYFgizBbuRHAkFm1hC1C48gW9K1X63CkGkiyKqy4u5pFwRZOfT6UMnZeSVBlv1LVLOCIDMGiatWEGT2wBGn5kJXSAzilII4pSBOKYhTCuKUAkEmBYIs4dUpjJo9gsxaR9WoXEiQZRVFzRNBlpaQdgcl47yQIHuNPUyT5Oy8kiBLCXskjCCrCavHEGTmuCEn5rIsdIXEIE4piFMK4pSCOKUgTikQZFIgyIzqslVfFQdoLSDI0hqG6V6s+smNLl8EQVaQh1Y0g903jBBkzeeZ/vGoxL9nQZAVGHFu7wv/UhtBVlDtbG/10H5BkBXUh0LpDsB5mgiyrIaMchTvO9ploSskBnFKQZxSEKcUxCkFcUqBIJMCQWZUl69qLnQKgiytwRRk9UK/IMgKTvv8+AoIsubz3FvoEQRZgXKclxdkvYUeQZAVCMeJIGtZM6/QFZKCOKUgTimIUwrilII4pUCQSYEgM6rLVr3QhZn6guw+DUlTwn2gCLKCdvICV8G/uLQge3OM74EgK2isGmFqLgiyCmOF+zSEyHJBkFWUcQbKckGQ5SVljLNxXuU8WLpCUhCnFMQpBXFKQZxSEKcUxClFN860Z+rndDqUsfpjenHep2EYhrWzMo7j4OD1+6yxfhX24pzmaZzuy32a5vu0xmkpqnThK3VroS2z8p5Mc0NFd9bJDsMNO3GO83Kfxmkax3lZ47QVldmQ22n3ZTIr6dcZQz6Xpg32EN95+Mf04ny+nOtL+Iyzoais6zLshYbMMuO0NvSoZdvh2n7lwhyIc+Pxd/8lfERl5mfvLhNTXbfV6w3Nwb7z8I95P85dk9u/gKgls2yLaQqySN95+Mf04ixjySxT+6Bl7/IhU2blR0LWAJmLLhbBEx9thHye8Yn4MQ7jZB/6OT7izHfLTM2PcRInnANxSkGcUhCnFAEFWaN1CEtMQRbpOw//mGiCLBmXOGuCCbL6kZASTJClAxNnTTRB9oQ4bcIJss42IJ4gs+7zghUfbQQE2Uk4jBNB9jk+4kSQnYSTOOEciFMK4pSCOKUQEWRGU+mSqAmyEF+E+HuoCbKLd/9kBNn6drjw1FwEBdm1e0p6guzSHV85QXbpNEUEGecpT3y0ERBkJ+EwzmsfzPwMH3EiyE7CSZxwDsQpBXFK8bM4+6eYb7DTDfwpl+nk/nWc1Xfle/8NslintN+anUV+HuJUUG87cdoy640WUAsrzkqKzJ5+gyzEDvvw7Mxk1vq8dhZ2qON0+xtkkdTbXpy1zEpfw/QLLLV/g2yJ0a3qx2nJrO/GafdzD9e5X1xs9daNsyWzrvQbZNmWvafJb5BlNWREVG90haQgTimIUwrilII4pSBOKRBkUiDIjOrqVd/qRHwRBFlaQ0OQzeNtGMcIExxBVmAalTDf0Ykgaz7PfBsacV5ckOU96ehxXlyQ1cdt3hvxCLKCVt4KsxNBlm01fJwQC+KUgjilIE4piFMK4pQCQSYFgsyoLlk1r9f9WwJBltZQm5Ng8xpBViAd54uLCjKro+gYBFlBc9X75Ob7mdsgyAraKyTexi0IsoJmnOme3y0Isvq5prvsZGPus1zoColBnFIQpxTEKQVxSkGcUhCnFN040zNnRz0u6z6v1/lhhNPDX6MX5z3Mb5DdpyFpHTio8lvsxRntN8jMJuB12IlzDPMbZHv/cA16cc7hfoPs2lNzUfoNMkfHat/j/Th3p0D/AqKWzPrZb5CR5YNenGUsmWVqH7T8/W+QVZcHXjZYH22EfB72d+fQwWGclz+e+QE+4sx3l0zNj3ESJ5wDcUpBnFIQpxQBBRkurE04QYYL6xFUkG0PcbG/8ENQQZY/GlaCCjKmpk1IQebnsMwb8QQZWXaIJshwYV18tBEQZCfhME4Ocj7HR5wIspNwEiecA3FKQZxSEKcU8QSZ0T+ClXCC7AWCrCawIMOo1EQUZGvyTM2KsIJsoX1kEFKQJeMyQzPiCbLs30kzJ5og4zyli482AoLsJBzGyRHO5/iIE0F2Ek7ihHMgTimIUwrilCKeIGu1DtPz2cseSoUTZOZXLCLLngQVZEWcNB6eRBRkSxnn8303XH5fG1WQVXG+I2KECSrIjNm5rbmzS5AmqCArtpH8ee2DosiCLF21f9v9ZfDRRkCQnYTDOBFkn+MjTgTZSTiJE86BOKUgTimIU4qIgmxZ1mMnP/U4IZwgW5blcWY6jtxxVBFRkNnKE5aIgmz9P+I0iCbIXhETp0EsQVZ9hRs9pJyggqy1masTTpBtEKeBjzYCguwkHMaJIPscH3EiyE7CSZxwDsQpBXFK8bM4+6eYb/DL18Ze5qTmr+Os+zpVH/gXOBpn+HvTvjU7i/w8xKlwb9pOnLbMeqMF1MKKs/quvXm8jdM2rLGhutO0X+cOse9NOzw7M5lVWw1zYYc6zls9Uno1xPqAzm1lPyypfPzzr1D3pu3FWcus9DXcnru5sEd7Z5trlnKg1m1lB+vcJ/a9af04LZn13Tjtl/RwnfvFxb43rRtnS2Zlfrm9sMencZod3eN17hP73rSjh0KpzNp2eOM89xe2+ThO25odrrMzOxXuTaMrJAVxSkGcUhCnFMQpBXFKgSCTAkFmVJddVGiejHoFQZbW0L+TKXzPFkF24B88gSBrPs+qYO9Tc0GQVdirhpiaC4Kswlohgkt5gCArMOIMdJcFgqx+rvmxU5ypudAVEoM4pSBOKYhTCuKUgjilQJBJgSAzqstWtbv7TkGQpTXUgmyv4+8MBFmBcRV88WWAnkGQNZ9nXlyAPe2CIKswZuc2XvTZeXlBlv0VwKwgyArqONM3ivfpiSCrn2t27JRuzfnUXOgKiUGcUhCnFMQpBXFKQZxSIMikQJAZ1TUEWYA3BIIsraESZOlfAkbl6oIsKzNAngiy5vM0xggf59UF2WuDwzRFn52XF2TH/sUPCLKCVmgR9BiCLC8pY3tTvHUo9V3oCklBnFIQpxTEKQVxSkGcUiDIpECQmcUlDQNzoVcQZOlKSf8h6TK938f/GgiyRnVV4/etVuG3QJD1nmvazw+hVBBkVmn528Caq05BkGW87v/bBr7VQ/sFQZYPU66WvCkC3A+IIDOHTY+dLnSiAs4gTimIUwrilII4pSBOKYhTim6cac/UOsf+GslppvtTwT+lF+d9GoZhWDsr4zgOHl69GNcvf4m9OKd5Gqf7cp+m+T6tcVqKKl34erWthbbMyi9abm/Ifxv8m+zEOc7LfRqnaRznZY3TVlRmQ26n3ZfJrKRfZwy5Ln2+xYbiLQIPenE+X871RX/G2VBU1o3L9kJDZplxmhvKbstjppYciHPj8Xf/NXxEZeb36qsbximJuBvWa49vVXh53o9zVxT1LyBqySzbYnavROKgqKIXZxlLZpnaBy17lw+ZMis/ErIGyFx0dSQFy7J4aSPk85CPxI9xGGcE6+8VH3Hmu2Wm5sc4iRPOgTilIE4piFOKcIIsb/05KMgV4QRZgEvRv0g4QUacPaIJMrvvB0+iCbJycCZqRjRBloJRqQgnyPJ/Js2ccILMPOKCJz7aCAiyk3AYJ4Lsc3zEiSA7CSdxwjkQpxTEKQVxShFNkOXnp3UD6uKEE2QpnKCWhBNkL1BlNeEEWTo2U7MkqiBjaprEFGSosQYhBRld3RbhBBlTs4ePNgKC7CQcxsmu9HN8xIkgOwkncZ7P7Xb7dglfgDilIE4piFOKaIJsaX3XftlPJM4Qguze+KWwYbpn7SjiDCbIqhNU4gwsyOreMHGGFWRW74g4YwqyxmEZcQYUZO1DbOIMJ8jKPfBj1fL6vnEmTi9G5RxBRpxO4jxHkBGnlCAjTqme7TUhTimIU4qfxdk/xXyDX/7JhctcZP3XcVbnjbeqD/wLHIzzmHrzzLdmZ5GfhziPqjfP7MRpy6w3WkAtrDjXjaUqbZy2YY0N1Z2m/TqP0FVvnjk8OzOZdUvexp2FHeo4b/VI6dUQ6wN2rNkPSrLGaC3wyl6ctcxKX8PtaZoLe7R3trlmKQdqWbODdR5hT715ph+nJbO+G6fdzz1c515xR9SbZ7pxtmRWZjfaC3t8GqfZ0T1eZ5eD6s0zRw+FUpm17fDGee4vbPNxnPZtZYfrbAdzWL15hq6QFMQpBXFKQZxSEKcUxCkFgkwKBJlZXNJ5sq2ZUxBk6Uq1IDMX+gVB1qjuWHvRGwiy7nPdW+gNBJlVWsypuSDICkyp0jYt7kCQ5cNEznJBkNnDbrts25r5ha6QFMQpBXFKQZxSEKcUxCkFgkwKBJlZ3KvzZHzhkWMQZOlKPReGIOsQT5CF2GEjyLrPdastxr4WQWaWZq4cwZEhyDK6/sTetisQZPkwndUCpIkgM4fNdtnltjxDV0gK4pSCOKUgTimIUwrilII4pejGmfZM/Vxv+joVdFGOK3px3h3+BlnaBojQpvlj9uL09htkWaOIPEt24hy9/QZZYb2IM6cX5+zyN8i2xcM0MTsLDsS5MXv5DbInIa4P+Fvej3NX4/YvIGrJrMO/QZaOyNws6MVZxpJZpvZBy6/+BlmyiIlZ46ONkM9DDlg/xmGcEa7J8YqPOPPdMlPzY5zECedAnFIQpxTEKUVoQeakIEdEE2S796hcm2iCrGgSkmZONEG2/sGe1iScIHt9hqef7PAgmiDLdA3twJL/B88j3lraAEdlAAAAAElFTkSuQmCC" 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