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在 mac 清除所有內容和設定

為 macos 製作開機安裝程式

如何重新安裝 macos

paulwong 2022-11-11 22:44 发表评论

paulwong 2022-11-11 11:27 发表评论

difference between homebrew and homebrew cask

install jdk11 on mac:

paulwong 2022-11-11 11:21 发表评论

paulwong 2022-11-11 11:07 发表评论

    private boolean needreordercheck(string requestid) {
        boolean result = false;
//        try(mongocursor mongocursor = 
//                mongotemplate.getcollection(mongotemplate.getcollectionname(accountnumproductlineindex.class))
//                             .distinct(key, filters.eq(request_id, requestid), string.class)
//                             .iterator()
//                )
        try(mongocursor mongocursor = 
                mongotemplate.getcollection(mongotemplate.getcollectionname(accountnumproductlineindex.class))
                             .aggregate(
                                 arrays.aslist(
                                    aggregates.project(
                                                    projections.fields(
                                                                    projections.excludeid(),
                                                                   projections.include(key),
                                                                   projections.include(request_id)
                                                                )
                                               ),
                                    aggregates.match(filters.eq(request_id, requestid)),
                                    aggregates.group("$"   key)
                                 )
                              )
                             .allowdiskuse(true)
                             .iterator();
        )
        {
            string key = null;
            boolean breakme = false;
            logger.info("needreordercheck.key --> start");
            while(mongocursor.hasnext()) {
                if(breakme) {
                    mongocursor.close();
                    break;
                }
                document keydocument = mongocursor.next();
                key = keydocument.getstring("_id");
//                key = mongocursor.next().getstring(key);
//                logger.info("needreordercheck.keydocument --> {}, key --> {}", keydocument, key);
                try(mongocursor indexmongocursor = 
                        mongotemplate.getcollection(accountnumproductlineindex.collection_name)
                                        .find(filters.and(filters.eq(request_id, requestid), filters.eq(key, key)))
                                        .iterator()
                )
                {
                    int preindex = -1, currentindex = -1;
                    document preindexdocument = null, currentindexdocument;
                    while(indexmongocursor.hasnext()) {
                        currentindexdocument = indexmongocursor.next();
//                        system.out.println(currentindexdocument.tojson());
                        if(preindexdocument != null) {
                             currentindex = currentindexdocument.getinteger(index);
                             preindex = preindexdocument.getinteger(index);
                             if(currentindex - preindex > 1) {
                                indexmongocursor.close();
                                breakme = true;
                                result = true;
                                break;
                            }
                        }
                        preindexdocument = currentindexdocument;
                    }
                }
            }
        }
        
        return result;
    }

paulwong 2022-10-18 10:22 发表评论

paulwong 2022-09-22 13:18 发表评论

import lombok.requiredargsconstructor;
import org.springframework.core.io.buffer.databuffer;
import org.springframework.core.io.buffer.databufferutils;
import org.springframework.stereotype.service;
import org.springframework.web.reactive.function.client.webclient;
import reactor.core.publisher.flux;
import reactor.core.publisher.mono;

import java.io.ioexception;
import java.nio.file.files;
import java.nio.file.path;
import java.nio.file.standardopenoption;
import java.util.objects;

@service
@requiredargsconstructor
public class filedownloaderwebclientservice {
    private final webclient webclient;

    /**
     * reads the complete file in-memory. thus, only useful for very large file
     */
    public void downloadusingbytearray(path destination) throws ioexception {
        mono<byte[]> monocontents = webclient
                .get()
                .uri("/largefiles/1")
                .retrieve()
                .bodytomono(byte[].class);

        files.write(destination, objects.requirenonnull(monocontents.share().block()),
                standardopenoption.create);
    }

    /**
     * reading file using mono will try to fit the entire file into the databuffer.
     * results in exception when the file is larger than the databuffer capacity.
     */
    public void downloadusingmono(path destination) {
        mono databuffer = webclient
                .get()
                .uri("/largefiles/1")
                .retrieve()
                .bodytomono(databuffer.class);

        databufferutils.write(databuffer, destination,
                standardopenoption.create)
                .share().block();
    }

    /**
     * having using flux we can download files of any size safely.
     * optionally, we can configure databuffer capacity for better memory utilization.
     */
    public void downloadusingflux(path destination) {
        flux databuffer = webclient
                .get()
                .uri("/largefiles/1")
                .retrieve()
                .bodytoflux(databuffer.class);

        databufferutils.write(databuffer, destination,
                standardopenoption.create)
                .share().block();
    }
}

paulwong 2022-09-22 13:14 发表评论

paulwong 2022-07-18 11:09 发表评论

paulwong 2022-06-23 17:27 发表评论

yum module list nginx

red hat enterprise linux 8 for x86_64 - appstream (rpms)
name                                         stream                                         profiles                                         summary
nginx                                        1.14 [d]                                       common [d]                                       nginx webserver
nginx                                        1.16                                           common [d]                                       nginx webserver
nginx                                        1.18                                           common [d]                                       nginx webserver
nginx                                        1.20 [e]                                       common [d]                                       nginx webserver

hint: [d]efault, [e]nabled, [x]disabled, [i]nstalled

yum module enable nginx:1.20

yum install nginx

paulwong 2022-06-23 17:21 发表评论