{"id":638,"date":"2021-02-07T17:23:53","date_gmt":"2021-02-07T09:23:53","guid":{"rendered":"https:\/\/www.52dixiaowo.com\/java\/?p=638"},"modified":"2021-02-07T17:23:54","modified_gmt":"2021-02-07T09:23:54","slug":"fileoutputstream-%e5%ad%97%e8%8a%82%e8%be%93%e5%87%ba%e6%b5%81","status":"publish","type":"post","link":"https:\/\/www.52dixiaowo.com\/java\/post-638.html","title":{"rendered":"FileOutPutStream \u5b57\u8282\u8f93\u51fa\u6d41"},"content":{"rendered":"\n

\u6b64\u7c7b\u53ef\u4ee5\u8f93\u51fa\u4efb\u610f\u7c7b\u578b\u7684\u6587\u4ef6<\/p>\n\n\n\n

1.\u5bfc\u5305<\/h5>\n\n\n\n
import java.io.FileOutputStream;<\/code><\/pre>\n\n\n\n
2.\u6784\u9020\u65b9\u6cd5<\/h5>\n\n\n\n
\u6784\u9020\u65b9\u6cd5\u53ef\u4ee5\u662f1\u4e2a\u53c2\u6570\uff0c\u62162\u4e2a\u53c2\u6570\uff0c<\/p>\n\n\n\n
\u6b64\u7c7b\u7684\u6784\u9020\u65b9\u6cd5\uff0c\u82e5\u76ee\u5f55\u4e0d\u5b58\u5728\uff0c\u5747\u4f1a\u629b\u51fa FileNotFoundException \u5f02\u5e38<\/p>\n\n\n\n
\u7b2c\u4e00\u4e2a\u53c2\u6570\u662f\u5fc5\u987b\u7684\uff0c\u53ef\u4ee5\u662f \u6587\u4ef6\u5b57\u7b26\u4e32 \u6216 File \u7c7b<\/p>\n\n\n\n
\/\/\u5f53\u76ee\u5f55\u5b58\u5728\u65f6\uff0c\u5c31\u4f1a\u521b\u5efa(\u8986\u76d6)\u4e00\u4e2a\u7a7a\u767d\u7684\u6587\u4ef6\nFileOutputStream fos1 = new FileOutputStream(\"D:\\\\a.txt\");\nFIleOutputStream fos2 = new FileOutputStream(new File(\"D:\\\\b.txt\"));<\/code><\/pre>\n\n\n\n
\u7b2c\u4e8c\u4e2a\u53c2\u6570\uff0c\u8868\u793a\u662f\u5426\u8ffd\u52a0\u5185\u5bb9\uff0c(\u662f\u5426\u8986\u76d6\u539f\u6709\u5185\u5bb9\uff09<\/p>\n\n\n\n
\/\/\u5f53\u76ee\u5f55\u5b58\u5728\u65f6\uff0c\u6587\u4ef6\u4e0d\u5b58\u5728\u4f1a\u81ea\u52a8\u521b\u5efa\uff0c\u7b2c\u4e8c\u53c2\u6570true\u5219\u8ffd\u52a0\nFileOutputStream fos3 = new FileOutputStream(\"D:\\\\c.txt\",true);\nFileOutputStream fos4 = new FileOutputStream(\"D:\\\\d.txt\",false);<\/code><\/pre>\n\n\n\n
3.\u65b9\u6cd5<\/h5>\n\n\n\n
 \u5199\u5165\u5b57\u8282\u7684 ASCII \u7801(\u5373\u4e8c\u8fdb\u5236)\uff0c\u7cfb\u7edf\u4f1a\u81ea\u52a8\u8f6c\u6362\u4e3a\u6587\u5b57<\/p>\n\n\n\n
\u82e5\u662f\u4e0d\u5728 ASCII \u7801\u8868\uff0c\u5219\u4f1a\u67e5\u627e\u9ed8\u8ba4\u7801\u8868\uff0c\u53ef\u80fd\u4f1a\u628a\u51e0\u4e2a\u5b57\u8282\u5408\u5e76\u4e3a\u4e00\u4e2a\u4e2d\u6587\u5b57\u8282<\/p>\n\n\n\n
write \u65b9\u6cd5\uff0c\u4f1a\u629b\u51fa IOException \uff0c\u9700\u8981\u5904\u7406\u5f02\u5e38<\/p>\n\n\n\n
1.\u5199\u5165\u4e00\u4e2a\u5b57\u8282<\/p>\n\n\n\n
fos1.write(97);  \/\/ --> a<\/code><\/pre>\n\n\n\n
2.\u5199\u5165\u591a\u4e2a\u5b57\u8282<\/p>\n\n\n\n
byte[] b = {49,48,48}; \nfos1.write(b); \/\/ --> 100\nbyte[] b2 = {-65,-66,-67,68,69}; \nfos2.write(b2);  \/\/ --> \u70e4\u7d3bE \uff0c\u524d4\u4e2a\u5b57\u8282\uff0c\u4e24\u4e24\u5408\u5e76\u4e3a\u4e2d\u6587\n\/\/  \u4e3a\u65b9\u4fbf\u8f93\u51fa\u6587\u5b57\uff0c\u53ef\u4ee5\u4f7f\u7528 String.getBytes() \u65b9\u6cd5\uff0c\u8f93\u51fa\u6587\u5b57<\/code><\/pre>\n\n\n\n
3. \u8f93\u51fa\u6362\u884c  (\\r\u56de\u8f66,\\n\u6362\u884c\uff0c\u9632\u6b62\u88ab\u7f16\u8f91\u5668\u8bc6\u522b\u5931\u8d25\uff0c\u6240\u6709\u4f7f\u7528 \\r\\n\uff09<\/p>\n\n\n\n
fos3.write(\"\u7b2c\u4e00\u884c\".getBytes());\nfos3.write(\"\\r\\n\".getBytes());  \nfos3.write(\"\u7b2c\u4e8c\u884c\".getBytes());<\/code><\/pre>\n\n\n\n
4.\u5173\u95ed\u6d41<\/p>\n\n\n\n
\/\/\u901a\u5e38\u90fd\u9700\u8981\u5173\u95ed\u6d41\uff0c\u4ee5\u8282\u7701\u5185\u5b58\nfos1.close();\nfos2.close();  <\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
\u6b64\u7c7b\u53ef\u4ee5\u8f93\u51fa\u4efb\u610f\u7c7b\u578b\u7684\u6587\u4ef6 1.\u5bfc\u5305 2.\u6784\u9020\u65b9\u6cd5 \u6784\u9020\u65b9\u6cd5\u53ef\u4ee5\u662f1\u4e2a\u53c2\u6570\uff0c\u62162\u4e2a\u53c2\u6570\uff0c \u6b64\u7c7b\u7684\u6784\u9020\u65b9\u6cd5\uff0c\u82e5\u76ee… \u7ee7\u7eed\u9605\u8bfb FileOutPutStream \u5b57\u8282\u8f93\u51fa\u6d41<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[22],"tags":[],"_links":{"self":[{"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/posts\/638"}],"collection":[{"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/comments?post=638"}],"version-history":[{"count":0,"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/posts\/638\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/media?parent=638"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/categories?post=638"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/tags?post=638"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}